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Showing results 1 to 50 of 5377
Search took 0.33 seconds. Search: Posts Made By: EngineerMike
Forum: Class A Motorhome Discussions 12-16-2023, 03:08 PM
Replies: 10
Views: 1,023
Posted By EngineerMike
Try a Dorman 699-100 assembly (google), you may...

Try a Dorman 699-100 assembly (google), you may have to cut off the pedal extension on the new part and bolt your pedal on to get the right geometry, but it appears to be the correct 6-pin (row of 4...
Forum: Alpine Coach Owner's Forum 12-16-2023, 02:55 PM
Replies: 9
Views: 716
Posted By EngineerMike
I don't think the air tank is connected to the...

I don't think the air tank is connected to the bleedable side of chassis air; there is a separate blow off located on the tank. The tank is supposed to retain air for the parking or "emergency"...
Forum: Alpine Coach Owner's Forum 12-16-2023, 02:50 PM
Replies: 5
Views: 529
Posted By EngineerMike
I stole this from previous thread: I RECOMMEND...

I stole this from previous thread:
I RECOMMEND DON'T USE THE BLUE WIRE W/THE "TRAILER" WIRE.
i've traced out the "trailer" wire & it is spliced into the brake light ground input on the front Vansco...
Forum: Alpine Coach Owner's Forum 12-16-2023, 02:43 PM
Replies: 5
Views: 477
Posted By EngineerMike
Could be the propane burner is clogged w/a spider...

Could be the propane burner is clogged w/a spider nest; could be the burner solenoid valve is caput. Start w/the former & blow out the fuel tube & try to light
Forum: Alpine Coach Owner's Forum 12-16-2023, 02:41 PM
Replies: 4
Views: 503
Posted By EngineerMike
I'm fairly sure that part of the system is WRV,...

I'm fairly sure that part of the system is WRV, not HWH. The Apex HWH manual is on the ACA Tech website; wiring schematics insofar as specified by HWH are in the back, bring your best magnifying...
Forum: Alpine Coach Owner's Forum 09-26-2023, 01:04 PM
Replies: 28
Views: 2,260
Posted By EngineerMike
IHMO, valves that stick out or worse down are not...

IHMO, valves that stick out or worse down are not worth the risk of a piece of recap or road trash breaking them off and making a big mess of your toad (and your day). Likely the Cummins ECM will...
Forum: Alpine Coach Owner's Forum 09-26-2023, 01:00 PM
Replies: 7
Views: 577
Posted By EngineerMike
Rt turn circuit: there is an 8 pin connector on...

Rt turn circuit: there is an 8 pin connector on the steering column for turn signals & flasher, pin B is supposed to have Ground signal when Rt turn is requested, Ground-In to the 8-pin is on pin H,...
Forum: Alpine Coach Owner's Forum 09-21-2023, 06:14 PM
Replies: 1
Views: 486
Posted By EngineerMike
Wiper power is provided by the Vansco PDM ahead...

Wiper power is provided by the Vansco PDM ahead of the passenger seat on the firewall and above the Vansco Multiplexer VMM. Wiper action is switched at the steering wheel which reports to the...
Forum: Alpine Coach Owner's Forum 09-21-2023, 05:40 PM
Replies: 1
Views: 392
Posted By EngineerMike
I believe you can get to the front slide assembly...

I believe you can get to the front slide assembly by taking the shower enclosure out which is easier than it would seem, I've been told 20 minutes by someone who did it.
The rear slide mechanism...
Forum: Alpine Coach Owner's Forum 09-21-2023, 05:36 PM
Replies: 7
Views: 1,109
Posted By EngineerMike
Bernie, Andy's photo might work on your MC, but...

Bernie, Andy's photo might work on your MC, but the MC depicted says 44.45 on it which is a 1.75" diameter cylinder, while the OEM was 2". The 1.75" can be swapped to the boost assembly straight...
Forum: Alpine Coach Owner's Forum 09-21-2023, 05:25 PM
Replies: 24
Views: 1,699
Posted By EngineerMike
IIWMI'd check the ohms to ground w/KeyOFF, KeyON...

IIWMI'd check the ohms to ground w/KeyOFF, KeyON and KeyStart before switching to a new sender just to get the stats down. Then I'd check same w/new sender in place & report here for the good of the...
Forum: Alpine Coach Owner's Forum 09-21-2023, 04:55 PM
Replies: 14
Views: 1,300
Posted By EngineerMike
We used to have a table showing that on the...

We used to have a table showing that on the Alpine Coach Association website under Tech Library. You have to be a member for access to the Tech Library but Membership is cheap.
Forum: Alpine Coach Owner's Forum 09-21-2023, 04:44 PM
Replies: 4
Views: 750
Posted By EngineerMike
The 2004's & Apex's appear to have some sort of...

The 2004's & Apex's appear to have some sort of differential vs the LTD's and SE's that preclude fooling the programming into a tie breaker (2 good units override the programming in a 3rd introduced...
Forum: Alpine Coach Owner's Forum 04-06-2023, 05:35 PM
Replies: 36
Views: 2,590
Posted By EngineerMike
Your coach is at that ripe age for a new transfer...

Your coach is at that ripe age for a new transfer switch; if one leg on the xfer is bad that would explain most or maybe all the charging problems. I've opened two of that vintage which were burnt...
Forum: Alpine Coach Owner's Forum 04-06-2023, 05:20 PM
Replies: 13
Views: 1,750
Posted By EngineerMike
Some coaches were made w/the cutout in the floor...

Some coaches were made w/the cutout in the floor and some were not; I've felt around for that hole in mine and can't find it. However the floor can be sawn thru to make the hole, that's how the 1st...
Forum: Alpine Coach Owner's Forum 04-06-2023, 05:10 PM
Replies: 21
Views: 2,557
Posted By EngineerMike
The parking brake is air-Off/internal spring-On...

The parking brake is air-Off/internal spring-On so if you lose air the parking brake engages. Brake requires maybe 40psi to release, chassis requires north of the same. 05 & later coaches have a...
Forum: Alpine Coach Owner's Forum 04-06-2023, 05:00 PM
Replies: 7
Views: 639
Posted By EngineerMike
Not the ignition switch, it only switches ground...

Not the ignition switch, it only switches ground and gauges get their ground from same source. Pull the burlwood bezel & check the connections on back of gauges, they may be loose (for some reason...
Forum: Alpine Coach Owner's Forum 04-06-2023, 04:54 PM
Replies: 18
Views: 1,606
Posted By EngineerMike
WRV installed a lot of the mushroom shaped...

WRV installed a lot of the mushroom shaped isolators upside down which pinches the integral pipe sleeve metal-to-metal. Installed correctly a new isolator improve vibration isolation to the radiator...
Forum: Alpine Coach Owner's Forum 04-06-2023, 04:43 PM
Replies: 2
Views: 280
Posted By EngineerMike
Could be a loose connection. The fuel gauge...

Could be a loose connection. The fuel gauge sending unit is visible behind the LF wheel in an oblong cutout in the upper frame, and has one spade connector & one ring terminal connector. Check...
Forum: Alpine Coach Owner's Forum 03-27-2023, 12:27 PM
Replies: 7
Views: 639
Posted By EngineerMike
Need more info. Lights started flashing: which...

Need more info. Lights started flashing: which lights?

By warning lights do you mean the two light clusters right of gauges?

Do the gauges sweep when you turn key to ON before starting then...
Forum: Alpine Coach Owner's Forum 03-27-2023, 12:02 PM
Replies: 29
Views: 3,995
Posted By EngineerMike
Cinequip, Morbid results: 1. Connecting good...

Cinequip, Morbid results:
1. Connecting good VMM but w/non-Alpine programming: FUN but not recommended, the outputs of the "other" programming will all be activated insofar as the Alpine's...
Forum: Alpine Coach Owner's Forum 03-27-2023, 11:51 AM
Replies: 10
Views: 1,637
Posted By EngineerMike
Rear Radiator, rubber roof iirc instead of...

Rear Radiator, rubber roof iirc instead of fiberglass, air brakes & air leveling
Forum: Alpine Coach Owner's Forum 03-15-2023, 11:14 PM
Replies: 24
Views: 2,585
Posted By EngineerMike
08 power steering fluid is hydraulic fluid tank...

08 power steering fluid is hydraulic fluid tank over the Cummins DPF in last basement compartment on passenger's side, along w/the spin-on filter found there.


Since you are doing routine...
Forum: Alpine Coach Owner's Forum 03-15-2023, 10:51 PM
Replies: 29
Views: 3,995
Posted By EngineerMike
The VMM power light flashing indicates one of two...

The VMM power light flashing indicates one of two issues, either a) the unit is unprogrammed or b) the unit has detected an internal error and is no earthly good.


To program the unit (forget...
Forum: Alpine Coach Owner's Forum 03-14-2023, 12:31 PM
Replies: 4
Views: 809
Posted By EngineerMike
Maybe old air bags are like old, saggy underwear...

Maybe old air bags are like old, saggy underwear whose elastic has seen better days
Forum: Alpine Coach Owner's Forum 03-14-2023, 11:48 AM
Replies: 29
Views: 3,995
Posted By EngineerMike
The "CAN Buss" is the coach's J1939 (technical...

The "CAN Buss" is the coach's J1939 (technical spec that heavy duty vehicle mfgr's follow) wire loom component that contains 3 wires: flo green, flo yellow, & clear insulated copper wire, all twisted...
Forum: Alpine Coach Owner's Forum 03-09-2023, 04:50 PM
Replies: 29
Views: 3,995
Posted By EngineerMike
1. Almost certainly not the CAN buss aka J1939...

1. Almost certainly not the CAN buss aka J1939 twisted pair aka flo green & yellow
2. Might be a dead comm circuit in one or both VMMs. Vansco updated their comm circuit late in the design evolution...
Forum: Alpine Coach Owner's Forum 12-22-2022, 04:10 PM
Replies: 13
Views: 1,505
Posted By EngineerMike
IIWMI'd use 1.5" swimming pool vacuum hose...

IIWMI'd use 1.5" swimming pool vacuum hose available at most HD & Lowes along with:
1.5" thread x female tube PVC fitting (gotta remove the old one which is the worst part of the job, see Bert's...
Forum: Alpine Coach Owner's Forum 12-22-2022, 03:58 PM
Replies: 8
Views: 725
Posted By EngineerMike
I fixed that on a coach at Quartzsite one year,...

I fixed that on a coach at Quartzsite one year, just needed to pull all the dog hair out of the electrical connector & Voila!
Forum: Alpine Coach Owner's Forum 09-02-2021, 03:50 PM
Replies: 19
Views: 2,146
Posted By EngineerMike
The reason the bad pressure sensor on the...

The reason the bad pressure sensor on the first-to-level end or side of coach works for auto-level and not when it is last to drop, is the motherboard makes the decision to stop dropping that jack...
Forum: Alpine Coach Owner's Forum 09-02-2021, 03:44 PM
Replies: 13
Views: 1,367
Posted By EngineerMike
OEM rig manufacturers could order VMMs...

OEM rig manufacturers could order VMMs w/specialty decals or generic. For '04 rigs WRV ordered decals w/the LED schematics labeled, for 05 and later they eliminated the formality and went generic. ...
Forum: Alpine Coach Owner's Forum 08-30-2021, 02:50 PM
Replies: 9
Views: 820
Posted By EngineerMike
Dash instruments & leveling are likely 2 separate...

Dash instruments & leveling are likely 2 separate issues, not one. Instruments may be powered off a fuse in the "Ignition" VEC on firewall ahead of passenger's feet. Might as well replace the...
Forum: Alpine Coach Owner's Forum 08-30-2021, 02:32 PM
Replies: 27
Views: 2,384
Posted By EngineerMike
Apparently on many coaches, the leveling system...

Apparently on many coaches, the leveling system instructions require starting the engine to run jacks down; I just serviced a new Holiday Rambler w/that sequence and I'm guessing air leveling...
Forum: Alpine Coach Owner's Forum 08-30-2021, 02:24 PM
Replies: 10
Views: 2,086
Posted By EngineerMike
I would definitely NOT go with synthetic. Its...

I would definitely NOT go with synthetic. Its better oil, however you have near 2 decades of seals & gaskets with dinosaur oil aging. I've seen too many cases of old assemblies starting to leak...
Forum: Alpine Coach Owner's Forum 08-30-2021, 02:21 PM
Replies: 23
Views: 2,181
Posted By EngineerMike
1. That's a tough spec, but I'm sure you are hung...

1. That's a tough spec, but I'm sure you are hung w/it.
2. Park brake is air-OFF, heavy-spring-ON. So the spring and the drum adjustment (as may exist) are the determinants of how well it will...
Forum: Alpine Coach Owner's Forum 08-30-2021, 02:02 PM
Replies: 12
Views: 1,022
Posted By EngineerMike
Could be the pad switches in the SmartWheel; they...

Could be the pad switches in the SmartWheel; they sell service parts. You may be able to open them, turn key ON and short the pad contacts to see if that works, never done that but its what I'd try....
Forum: Alpine Coach Owner's Forum 08-30-2021, 01:53 PM
Replies: 13
Views: 1,514
Posted By EngineerMike
1. Suspension tag isn't the same as the axle tag....

1. Suspension tag isn't the same as the axle tag. For suspension look behind the FL tire toward the frame channel, might be painted over, might have decades old painter's tape on it that was never...
Forum: Alpine Coach Owner's Forum 08-30-2021, 01:47 PM
Replies: 19
Views: 2,146
Posted By EngineerMike
I don't think the OP's leveling problem is the...

I don't think the OP's leveling problem is the level sensor (could be but...). Mine does what you describe but on the front; was told by HWH there is a feedback sensor on each jack, one of which...
Forum: Alpine Coach Owner's Forum 08-30-2021, 01:39 PM
Replies: 9
Views: 1,410
Posted By EngineerMike
IIWMI'd take it to either San Diego RV Center, El...

IIWMI'd take it to either San Diego RV Center, El Cajon, or MDS diesel also in El Cajon.

This probably exceeds capacity of most mobile truck mechanics if you are stuck somewhere as it will take a...
Forum: Alpine Coach Owner's Forum 08-11-2021, 02:27 PM
Replies: 21
Views: 2,256
Posted By EngineerMike
The 34's have a stack of steel bars for added...

The 34's have a stack of steel bars for added dead weight on the front axle to compensate for the lower wheelbase. The 34 wheelbase lacks the basic 2ft of coach length vs the 36 and moves the front...
Forum: Alpine Coach Owner's Forum 07-01-2021, 06:16 PM
Replies: 7
Views: 1,638
Posted By EngineerMike
I used a 1.5" thread x glue PVC fitting at the...

I used a 1.5" thread x glue PVC fitting at the ABS Y behind the slide, cut out about 1/2 of the 1.5"(i.d.) spa tubing, & replaced w/1.5"(i.d.) pool vacuum hose (very flexible, very available: Lowes,...
Forum: Alpine Coach Owner's Forum 07-01-2021, 06:09 PM
Replies: 65
Views: 6,355
Posted By EngineerMike
My $0.02 FWIW: the hitch failed by progressive...

My $0.02 FWIW: the hitch failed by progressive fatigue over time, starting just below the lowest bolt in each column of 4 bolts. The primary culprit is left-right force on the hitch, working the...
Forum: Alpine Coach Owner's Forum 06-21-2021, 06:56 PM
Replies: 19
Views: 1,696
Posted By EngineerMike
The only chassis wiring schematic I have is a...

The only chassis wiring schematic I have is a 2005m.y., it shows the 20A fuse for Refer in the batt compartment fuse block w/a #12 red wire labeled REFER running from the fuse to a pigtail out of the...
Forum: Cummins Engines 04-26-2021, 06:29 PM
Replies: 4
Views: 728
Posted By EngineerMike
ISL Cruise Cancel function

I have a 2007 build year DPF engine, ISL, CM2150 ECU. I've discovered two service brake signals to the ECU. One is generated by the Actia brand dash gauge cluster & broadcast via J1939 to the ECU...
Forum: Alpine Coach Owner's Forum 11-20-2020, 04:29 PM
Replies: 13
Views: 1,282
Posted By EngineerMike
Trailsweep, if you are an ACA member you can...

Trailsweep, if you are an ACA member you can access the Tech Library which has a folder on the VDC, including a doc from a different coach line that used VDCs showing some solder repairs that revived...
Forum: Alpine Coach Owner's Forum 11-20-2020, 03:49 PM
Replies: 26
Views: 4,288
Posted By EngineerMike
C_oneil is close to correct on the fuel gauge...

C_oneil is close to correct on the fuel gauge ohms which is 35-240 ohms.
You can replace an OEM sender with an equivalent ohmed "marine" unit that uses a 2-piece arm & float, and lining it up...
Forum: Alpine Coach Owner's Forum 11-20-2020, 03:26 PM
Replies: 3
Views: 729
Posted By EngineerMike
If it is yellow, it could be the DPF warning...

If it is yellow, it could be the DPF warning light telling you the clean cycle is in operation. It takes about 20 minutes of full operation to complete, then goes back to normal fuel mode & the light...
Forum: Alpine Coach Owner's Forum 07-11-2020, 04:48 PM
Replies: 6
Views: 928
Posted By EngineerMike
The floor rot problem in this area can also be...

The floor rot problem in this area can also be caused by leak in the kitchen sink waste plumbing line that drips constantly on the OSB, or from the shower controls above, or from bad rear sealing of...
Forum: Alpine Coach Owner's Forum 07-11-2020, 04:41 PM
Replies: 3
Views: 552
Posted By EngineerMike
Ernie- send me a PM and describe the leak

Ernie- send me a PM and describe the leak
Forum: Alpine Coach Owner's Forum 07-11-2020, 04:40 PM
Replies: 14
Views: 1,791
Posted By EngineerMike
Max reported grungy conditions on the VDC from an...

Max reported grungy conditions on the VDC from an HWH leak on the synchro cylinder above the rear VMM (and hydraulic line hovering over the VDC which is inboard of rear VMM on same bulkhead as VMM)....
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