Unkn0wn - Welding MQ Patrol Front diff.
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Uploaded by Unkn0wnUtube on Jun 15, 2010
The process we used to weld the front diff on my 85 mk (mq) Nissan Patrol.
The front diff is an 'open' type diff, so only one wheel will spin under power.
This is undesirable for off-road driving as you want as much traction as possible.
Welding the diff is one of the cheapest options, the preferred method is generally the installation of a good LSD diff or locked diif (auto or air type are most common)
Obviously you may do it differently, but this is what we did :
Remove sway bar - more clearance
Remove drain plug - Drain oil
remove breather hose
Remove front cover
clean diff rigorously
weld spider gears together (both side of diff cage)
clean diff rigorously
Remove any splatter
Clean diff again (dirt and splatter will cause the diff to break)
Put drain plug back in
Attach diff cover with new gasket - this was cleaned and painted in the meantime.
refill with oil
reattach diff breather hose
Test
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Uploader Comments (Unkn0wnUtube)
All Comments (16)
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ShouLd of done the back ha
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@Egomaniacs239 How are you going to keep the ring gear and pinion lubed and cooled? A durrrrrrr
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i thought you dont have too use oil if you welded your diff.
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@Unkn0wnUtube My buddy just welded his 4-Runner front and rear, I told him to leave the front alone, now he regrets it!!
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@Unkn0wnUtube oh oky thanks i was just wondering cus its a lot of grease and nocks and cranys u got to get into so i wasent sure if there was something special u had to use thanks
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@turkiq Welded the spider gears to the outside spidergear housing.
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And now its hard a as hell to turn right?
theninja001 11 months ago
@theninja001 I sold the car about 6 months back and got a different Nissan 4wd. The patrol would fight the steering and would allways want to be centered, so you would constantly have to be holding the steering wheel. If you unlocked one of the hubs it was fine.
Unkn0wnUtube 11 months ago
what did u use to clean it for welding? wax and gress remover?
harley101010101 11 months ago
@harley101010101 Degreaser first, lots of it. then yes. some wax and grease remover, let it dry, did the welding. Checked all gear teeth, removed any glag, cleaned a few more times, put back together.
Unkn0wnUtube 11 months ago