• Universal joints:
— freedom of movement
— damaged or worn-out
— correctly lubricated
— correctly indexed
• Vehicle differential backlash—manufacturer’s specification
• Universal joint coupling—alignment and differential damage
• Cross-frame members and rear support members—condition and location
• PTO-driven equipment shafts and couplings—damaged or misaligned
• Auxiliary transmission:
— shaft alignment
— alignment of yoke or flange
— backlash
— fluid leaks
5–4. COOLER, FILTER, AND LINES
a. Inspection. Perform the following and correct any faulty conditions:
• Transmission fluid cooler and related coolant lines:
— Inspect for contamination—clean and flush as necessary
— Inspect for deterioration
— Inspect for faulty connectors or kinks
— Clean and flush transmission fluid cooler, both coolant and oil sides.
Pressure test both sides using a 276 kPa (40 psi) air supply.
• Hydraulic lines:
— Inspect for contamination—clean and flush as necessary
— Inspect for deterioration
— Inspect for faulty connectors or kinks
b. After Overhaul. A complete cleanup of the transmission system after an
overhaul cannot be assumed. Repeated cleaning and flushing may not remove all
debris from the transmission fluid cooler system. Replace the transmission “from
cooler” (lube) filter after 5000 miles (8000 km). Refill the transmission to the
correct fluid level (refer to Section 2–3, TRANSMISSION FLUID TEST).
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