Reverse Recovery Stress

[FJ40_owner]

Reading some of the other vehicle forums I have noted that is is stressful on the front drive line during a hard recovery using reverse. Is this true as well for my 77 40?

I suspect if this is true then I obviously should take the time to use my winch in liew of a strap and hoursepower.

Thanks,

BigJim

 

[slvrbck]

It's because of the way the gears are cut. It's always better to pull someone out forward vice reverse.

 

[John Smith]

Considering many people seem to break birfields simply backing up in 4wd with the wheels turned I would say yes.

 

[matt.mcinnes]

No great problem for a 40, later 80 series on has issues with the front diff the way the teeth are cut makes them stronger going forward rather than in reverse, due to the high pinion I think it is.

Seen a few 80's and a 100 do front diff's trying to back out of things and snatch others out.

 

[bustanutley]

your birfs will hate you. your front diff however is seeing the same situation as if it were in the rear going forward since it is low pinion.

 

[Isotel]

Only a Hi Pinnion Front Gearset will be weaker.
But when you are Tugging in reverse all the weight of the truck will shift and put more stress to your front axle..

 

[boysrus]

The other reason can be a weak idler shaft for reverse gear. I've heard of it happening several times (maybe rural myths) but saw it once on a NP435 or T18. Not sure if LC tranny is succeptible to this or not.