Just recieved a quote from my local shop regarding a rear end issue with my 80K mile truck. Issue: speed dependent high pitch whining sound from rear end. Diagnosis: Worn carrier bearings. Suggested repair: Full rear end rebuild (carrier bearings, pinion bearings, differential clutch pack, seals, lube etc.) Quoted cost: $1250
Does this seem like a reasonable price for the labor
/parts involved? The service tech said it would take ~5 hours labor + parts. Should I request the failed bearings to see if they truely are worn out as they claim? I normally would not question their diagnosis but my dad (45 year Ford dealership mechanic - retired) says that my described symptom (i.e. high pitch whining) does not sound to him lilke a carrier bearing issue. I already authorized the shop to do the work but after talking to my dad I am now a little suspicious of their repair quote. If there was metal shavings in my rear end from the worn carrier bearings wouldn't that result in speedometer and anti-lock brake sensor issues as well as rear end noise?
Seems fairly reasonable.
*** I was fairly surprised when I replaced my l/s with an eaton locker to see how absurdly tight the carrier (bearings that support the cage /carrier that houses the l/s, or spider gears) were. I had just under 72,000 miles on the truck and the bearings were all gaulled and showing heavy wear. I think they used a 10# sledge to put the spacers in at the factory. I should have pulled and replaced the pinion bearings / races at this time, but they felt ok.
3,000 miles later had a slight vibration, ended up being the pinion bearings. What a way to dump 4 qts. of synthetic gear lube in the drain pan.
Surprised you heard a noise.... truck is so noisy in the first place.
The diagram shows an open diff, but the major parts are the same.
They are going to change # 2 side bearings, # 8pinion bearings. 2 sometimes being called carrier bearings.
Either way, you should get a 1 year warranty on parts/ labor on a dealer performed service? I hope.
PS I love my eaton locker... no more embarrising moments getting stuck on wet grass or towed out of muddy camping spots towing camper