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mk48 night mare

jcappeljr

jcappeljr

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mk48 done 001.jpgmk48 done 002.jpgThe mk48 is back together and running,I only took it about a half a mile up the road.It was a long day.My mechanic said dont ever call him to replace the transfer case again.It was a job.Now I get to drive it and learn her secrets.Be fore I go anywere with it I am going to go completely over it good.
 
marchplumber

marchplumber

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Ya owe the Mechanic a steak dinner, favorite beverage and a firm hand shake. (Well $ doesn't hurt either!) LOOKS WONDERFUL!!! Congrats and ENJOY!!!

God bless,
Tony
 
jcappeljr

jcappeljr

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It got hot at some point,the paint was blistered above the input shaft.I think the lube pump went bad,and the input shaft went out or snapped.That big transfer case only has about 6'' of oil capacity.
 
TacticalTruck

TacticalTruck

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I just went through the same thing. The suction hose on the T-case oil pump was kinked.

Everyone check theirs!

What oil are you LVS owners running in your T-cases?
 
TacticalTruck

TacticalTruck

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Really need to know what kind of oil to put in it. John put 90 weight but I think that's too heavy w/ an external oil pump. The HEMTT uses 40 weight, I know it's a different case.
 
D

DrillerSurplus

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TacticalTruck said:
Really need to know what kind of oil to put in it. John put 90 weight but I think that's too heavy w/ an external oil pump. The HEMTT uses 40 weight, I know it's a different case.
Click to expand...
Has anyone found the Lubrication Order for the MK48? I've looked some without success. There was a thread earlier this year

From Olive Drab site - "The lubrication order is Marine Corps Lubrication Instruction LI 2320-12/9B or Army Lubrication Order LO 9-2320-297-12. It consists of 25 cards."

Here is the information from LO-9-2320-279-12 for the M977. It calls for OE/HDO MIL-L-2104. The MIL-L-2104 specifications read: " Description: A lubricating oil for an internal combustion engine, combat/tactical service, low volatility. Synthetic oil with additives for anti-oxidation and corrosion protection. Designed for use in all combat and tactical, diesel and gasoline-powered ground vehicles and equipment, and include performance requirements for power shift transmissions. This oil is also used in many hydraulic, power steering, power transmission, and gear box applications, as specified by the lube orders."

It goes against my grain to put engine oil in a gearbox, but unless there is solid information to the contrary, that is what I'd run. The synthetic may do a better job for a gearbox than a straight petroleum based motor oil.
 
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