Question about 1987 GMC R3500

1 Answer

Have Mack 12 speed gearbox from R model with broken selector for on top,rear case needs to be unbolted in order to slide out selector shaft. Do we need special tools or with block and tackle can this operation be done in our own workshop with our standard tools.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points
    All-Star:

    An expert that got 10 achievements.
    MVP:

    An expert that got 5 achievements.
    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 593 Answers

If I am reading your post correctly. You wan't to split
the aux. transmission from the main, just enough to
change the shift rods. I don't rember the last mack I
did it's been a while. The last one was a quad box in
an autocar. That was done on the floor, by blocking
the main with pieces of 2x4's+4x4's and using a
home made flat cart under the aux. But I think you
want to do this in frame. In that case you will need
a transmission jack. If the mount is under the main
use the jack to slide the aux. back. If not suspend
the main with heavy jack stands. And if needed a
heavier piece of channel iron. Also do not do this
alone. Make sure you have plenty of help with you.
One time I did not. But lived to warn about it.
Hope this is of some help. Be careful.
Good luck.

Posted on Feb 02, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

6ya.com

6ya - Get Instant Help

6ya.com

Need repair answers fast Use 6ya to...

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2001 subaru forester dual range 5 speed manual and it is stuck in reverse gear and wont com out tryd rocking it unbolted the main shaft into gear box and tryd manualy shifting it but no luck
I suspect a broken selector. Remove gearbox and repair as required.

Jun 22, 2017 | Subaru Cars & Trucks

1 Answer

Citroen jumper gear change
Your description makes me remember an old Austin Metropolitan I had once. The gear linkage was crude and it was possible sometimes to engage two gears at once resulting in a lock-up and a stalled engine. It never happened while driving at speed.

When repairing a gearbox, once the selector linkage has been removed it is usual to select two gears in order to lock the shafts for the tightening or loosening of a retaining nut. There is built into the internal selector linkage an interlock to prevent two gears being selected.

I imagine that interlock in your gearbox is worn or broken...

Jul 30, 2017 | Cars & Trucks

1 Answer

Honda 1985 250sx 3rd gear wont work
Either a circlip has come loose on the shaft or bearing locating the gearbox bits in place or the selector tang has broken off from the rotary selector drum. No easy fix, the motor out of the frame and the gear case opened up, a job for someone who knows what they are doing.

Terry

Nov 25, 2012 | Cars & Trucks

1 Answer

How to remove a transmission out of a 2002 z71
Remove rear drive shaft from ******, remove front drive shaft from transfer case, remove shift linkage, fluid lines(plug so they don't leak the fluid out) and wire harness from both t-case and ******, unbolt and remove T-case, using a support to hold ****** up, remove crossmember and unbolt ****** from bell housing, slide back and down to remove ******.

Jun 08, 2012 | 2002 Chevrolet Silverado 1500

1 Answer

Need transmission repair instructions for 1987 acura integra 5 speed transmission. 5th gear went - getting bearings, seals - repair kit will be here tomorrow. my sons book is in washington state and he...
changing 5th gear on most manual gearboxes can be done without removal of the gearbox ,remove the inner wing and then access is quite easy ,take the rear cover off the back of the gearbox undo a nut or bolt on a stud and then gear selector can be removed and then a circlip at the end of the shaft and of it all comes ,

Sep 01, 2011 | 1987 Acura Integra

1 Answer

Car will not move in any gear
your question is very brief making it hard to understand what you need to know , is your car manual or atomatic gearbox ?

if manual gear box then you may have one of many things , your clutch is worn out ,or maybe just the clutch slave cylinder , if 4wd is engaged does if move with front tire's if so rear tail shaft or diff broken .

if automatic , then you may have bands broken or blown gear box in both cases .

if 4wd drive try driving in 4wd using front wheel to drive vehicle , if it moves then rear diff or tail shaft is problem , if not gearbox is most likely dammaged

hope this helps you !

Oct 08, 2010 | Land Rover Freelander Cars & Trucks

1 Answer

OIL LEAKING FROM TOP OF GEAR BOX
is it coming from transfer case gasket?its mounted to gearbox or breather

Jan 01, 2010 | 1987 Toyota Land Cruiser

3 Answers

Gear box is stuck in 4th gear on my mazda e2200
check the linkages (rods connecting stick and gearbox) my e2000 is also stuck in third mechanic friday then ill post my discoveries

Nov 10, 2009 | 1986 Mazda 626 Coupe

1 Answer

What is the correct way to insert the center support bering on the drive shaft on a long box 1988 dodge dakota pick up. email me at extremeflyplanes@yahoo.com thank you, Scott.
You've got to release the rear end driveshaft universal. Pull the rear shaft from the front shaft and carefully wrap the universal with some electrical tape all around the buttons(bearings) to keep them from coming apart. That can turn into a night mare.Place the rear shaft on a tarp like cover to keep it sand free. Then just unbolt the carrier(center) bearing and slide it off the front shaft. Reverse order to reassemble. Thanks Dana

Aug 15, 2009 | 1988 Dodge Dakota

1 Answer

Pictures of removing gearbox and transfer case from vehicle
REMOVAL & INSTALLATION CAUTION
The catalytic converter is located beside the transfer case. Be careful when working around the catalytic converter because of the extremely high temperatures generated by the converter.
  1. Disconnect the negative battery cable.
  2. Raise the vehicle and support it safely.
  3. If so equipped, remove the skid plate from frame.
  4. Drain the transfer case.
  5. Remove the damper from the transfer case, if so equipped.
  6. On electronic shift models, remove the wire connector from the feed wire harness at the rear of the transfer case. Be sure to squeeze the locking tabs, then pull the connectors apart.
  7. Disconnect the front driveshaft from the axle input yoke.
  8. If equipped, loosen the clamp retaining the front driveshaft boot to the transfer case, and pull the driveshaft and front boot assembly out of the transfer case front output shaft.
  9. Disconnect the rear driveshaft from the transfer case output shaft yoke.
  10. If equipped, disconnect the speedometer driven gear from the transfer case rear cover.
  11. If equipped, disconnect the electrical wire harness plug from the Vehicle Speed Sensor (VSS).
  12. Disconnect the vent hose from the mounting bracket.
  13. On manual shift models, perform the following:
    1. Remove the shift lever retaining nut and remove the lever.
    2. Remove the bolts that retains the shifter to the extension housing. Note the size and location of the bolts to aid during installation. Remove the lever assembly and bushing.
  14. If equipped, remove the heat shield from the transfer case.
  15. Support the transfer case with a transmission jack.
  16. Remove the mounting bolts retaining the transfer case to the transmission.
  17. Slide the transfer case rearward off the transmission output shaft and lower the transfer case from the vehicle. Remove the gasket or any old sealer from between the transfer case and the transmission.

Mar 29, 2009 | 1988 Mazda B2600 Cab Plus

Not finding what you are looking for?

View Most Popular

1987 R3500

  • Cars & Trucks

Related Question

I have a 2001 subaru forester dual range 5 speed manual and it is stuck in reverse gear and wont com out tryd rocking it unbolted the main shaft into gear box and tryd manualy shifting it but no luck

  • Subaru Cars & Trucks

Open Questions:

0 Answers

GMC Oil Pressure Gauge Reading High

Apr 10, 2012 | 1987 GMC R3500

0 Answers

Where is the physical location of the signal in the gas tank of a 1987 GMC 3/4 ton truck with dual gas tanks?

Jul 07, 2011 | 1987 GMC R3500

0 Answers

Code P0219 (overspeed condition) how do i fix it? It is on a GMC 7500 year 1981 with 202 motor.

Sep 29, 2009 | 1987 GMC R3500

0 Answers

I HAVE A C8500 THAT WON;T START

Sep 17, 2009 | 1987 GMC R3500

Related Topics

Cars & Trucks Logo

Related Topics:

376 people viewed this question

Ask a Question

Usually answered in minutes!

Popular Questions

GMC R3500 Cars & Trucks

GMC R3500 Cars & Trucks

GMC R3500 Cars & Trucks

1987 GMC R3500

GMC R3500 Cars & Trucks

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top GMC Experts

yadayada
yadayada

Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...