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Search: Posts Made By: DtotheAmbrose
Forum: Caterpillar Drivetrain 07-12-2021, 01:56 PM
Replies: 5
Views: 477
Posted By DtotheAmbrose
I just replaced the rear diff in my GMC chassis...

I just replaced the rear diff in my GMC chassis for the same thing, over 55mph and ~20 minute into a drive when everything got warm I would get a really weird noise through the drive train under...
Forum: Caterpillar Drivetrain 06-19-2021, 11:20 AM
Replies: 6
Views: 765
Posted By DtotheAmbrose
I had the tensioner pulley do something similar...

I had the tensioner pulley do something similar only under heavy load pulling hills. It looked fine visually when the truck was idling, when the belt was removed you could really tell it was dying.
Forum: Caterpillar Drivetrain 05-04-2021, 09:37 AM
Replies: 1
Views: 866
Posted By DtotheAmbrose
Problem is resolved! Turns out the color...

Problem is resolved!

Turns out the color people have been listing for the tachometer wire is not purple on the earlier models, it is yellow and has a 5 amp fuse inline with it.
Forum: Caterpillar Drivetrain 05-03-2021, 02:51 PM
Replies: 1
Views: 866
Posted By DtotheAmbrose
GMC Topkick Chassis 3116 Tach Wire

I have seen several posts online with it being noted the purple wire on the back of the alternator is the tach signal for the 90s GMC topkick diesel.

I have a 1990 model with the 3116 and the...
Forum: Caterpillar Drivetrain 12-30-2020, 03:33 PM
Replies: 12
Views: 1,216
Posted By DtotheAmbrose
Manual or Automatic?

Manual or Automatic?
Forum: Caterpillar Drivetrain 11-12-2020, 07:16 PM
Replies: 5
Views: 915
Posted By DtotheAmbrose
Welp I am going to cheat. I found a 9Y variant...

Welp I am going to cheat. I found a 9Y variant from a 97 bus which is a 250hp model. I get to get more horsepower and an exhaust brake.
Forum: Caterpillar Drivetrain 10-20-2020, 12:02 PM
Replies: 5
Views: 915
Posted By DtotheAmbrose
The trans was locked up in 3rd when I tried it...

The trans was locked up in 3rd when I tried it out. I found an engine decently close so now the debate of swapping the engine, whee!
Forum: Caterpillar Drivetrain 10-19-2020, 10:04 AM
Replies: 5
Views: 915
Posted By DtotheAmbrose
I already put the brake on but was very careful...

I already put the brake on but was very careful not to give it too much RPM as I had some concerns after reading the jacobs tech bulletin. The stock springs must be really soft as it did absolutely...
Forum: Caterpillar Drivetrain 10-14-2020, 09:10 PM
Replies: 5
Views: 915
Posted By DtotheAmbrose
Cat 3116 7SF/2BK Variants and Exhaust Brakes, Need help

I am hoping someone with more historical knowledge can help me out.

My topkick has a 7SF cat 3116 in it and the chassis was delivered to the coach builder in Jan 1991 but the chassis itself was...
Forum: Caterpillar Drivetrain 10-14-2020, 08:53 PM
Replies: 9
Views: 1,318
Posted By DtotheAmbrose
Pictures would be cool if you have time. The...

Pictures would be cool if you have time.

The 4 lights are the level of brake force being applied to the driveline. I want to say the maximum is something 920ft/lbs. It it based on the brake...
Forum: Caterpillar Drivetrain 08-19-2020, 02:39 PM
Replies: 1
Views: 619
Posted By DtotheAmbrose
Welp I am going out on a limb, Every cat...

Welp I am going out on a limb,

Every cat rebuilder I have spoken with said they would change the valves and springs out which means I should be safe with an exhaust brake.

I found that pacbrake...
Forum: Caterpillar Drivetrain 08-19-2020, 02:36 PM
Replies: 5
Views: 613
Posted By DtotheAmbrose
There is some capacity those gearboxes, wow

There is some capacity those gearboxes, wow
Forum: Caterpillar Drivetrain 08-12-2020, 05:45 PM
Replies: 3
Views: 548
Posted By DtotheAmbrose
If that is really 121,000,000 miles I would skip...

If that is really 121,000,000 miles I would skip it. If it is 121,000 then I would ask to see some service records :)
Forum: Caterpillar Drivetrain 08-12-2020, 03:32 PM
Replies: 1
Views: 619
Posted By DtotheAmbrose
Cat 3116 Specs on a rebuild

I am hoping someone can help me solve this mystery.

The Cat 3116 was rebuilt in my truck It is a serial# 7SF18670

The plate on the engine has a hand etched changed over the power number to 215...
Forum: Caterpillar Drivetrain 07-22-2020, 10:36 AM
Replies: 42
Views: 7,039
Posted By DtotheAmbrose
I picked up the transmission (including torque...

I picked up the transmission (including torque convertor), flex plate, spacer, and hardware from Holst out of Idaho. I told them what I was doing and they sent everything, $1300 shipped if I...
Forum: Caterpillar Drivetrain 06-18-2020, 02:48 PM
Replies: 2
Views: 685
Posted By DtotheAmbrose
Welp it is not the dash for sure at this point. ...

Welp it is not the dash for sure at this point. I picked up another used one which they confirmed the tach worked before pulling it.

I installed a new alt which is where the signal is generated...
Forum: Caterpillar Drivetrain 06-18-2020, 02:47 PM
Replies: 9
Views: 1,318
Posted By DtotheAmbrose
I hit a bit of a snag with the pre-installation...

I hit a bit of a snag with the pre-installation work. The model of truck I got the Telma from had ABS and the installation truck a 1991 which does not. I am waiting for an email back from Telma on...
Forum: Caterpillar Drivetrain 05-09-2020, 08:59 PM
Replies: 2
Views: 685
Posted By DtotheAmbrose
GMC Topkick/Kodiaks

Has anyone here had to deal with an in-op tachometer in a Topkick or a Kodiak in the 91-97 3116 models before?

Key on the tach hops a little bit. Cranking over it moves as well but once the truck...
Forum: Caterpillar Drivetrain 05-09-2020, 08:53 PM
Replies: 42
Views: 7,039
Posted By DtotheAmbrose
Alright I sort of fell off planet a bit with the...

Alright I sort of fell off planet a bit with the covid crap, work exploded and I have been non stop for the past 6 weeks.

I will get an more detailed update posted shortly but the short version.
...
Forum: Caterpillar Drivetrain 03-27-2020, 06:13 PM
Replies: 42
Views: 7,039
Posted By DtotheAmbrose
This trans looks to have never been touched and...

This trans looks to have never been touched and didn't look cleaned which I was happy about. The MT643 had an electronic modulator which I swapped out for the mechanical version from the truck and...
Forum: Caterpillar Drivetrain 03-26-2020, 06:37 PM
Replies: 9
Views: 1,318
Posted By DtotheAmbrose
Here is the Telma unit and all of the parts I...

Here is the Telma unit and all of the parts I recieved. Based on what I have and the manuals it is everything.

The fun part will be what to do with the ABS connections as my GMC is a 1991 model...
Forum: Caterpillar Drivetrain 03-26-2020, 06:26 PM
Replies: 42
Views: 7,039
Posted By DtotheAmbrose
I got the passenger fuel tank re-installed and...

I got the passenger fuel tank re-installed and filled back up and got a chance to drive the truck.

1st is a little long and it holds until 15mph until it shifts.
2nd felt pretty good and under...
Forum: Caterpillar Drivetrain 03-26-2020, 06:20 PM
Replies: 42
Views: 7,039
Posted By DtotheAmbrose
I got the the parking brake installed and was...

I got the the parking brake installed and was able to re-use the original cable by picking up a new clevis from Mcmaster carr. The cable on the GMC topkick is a 3/8-24 with a 3/8 pin. The new...
Forum: Caterpillar Drivetrain 03-19-2020, 05:07 PM
Replies: 9
Views: 1,318
Posted By DtotheAmbrose
I will be posting it in this thread.

I will be posting it in this thread.
Forum: Caterpillar Drivetrain 03-17-2020, 02:00 PM
Replies: 9
Views: 1,318
Posted By DtotheAmbrose
With the MT643 trans swap almost completed I will...

With the MT643 trans swap almost completed I will get going on this install since no one appears to have done one.

The unit I have came out of the newer chassis C5500/C6500 bit it looks like most...
Showing results 1 to 25 of 38

 
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