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4-25
Operation 29
Clean the Transmission Breather (CAT TA22 only)
The transmission breather (1) is located on the upper
rear side of the transmission. Unscrew and remove the
breather.
Clean the breather in clean, nonflammable solvent.
Re-install the breather.
Operation 30
Check the Air-Conditioner Drain Hoses
A/C drain hoses are routed down inside the front cab
door posts (two per side) and exit below the front
frame.
Withdraw the hoses and inspect the dust valves (2)
fitted to the end of each tube. Ensure that they are
sealing properly and that condensation from the
A/C can drain away. Clean when necessary. If the dust
valves are missing, replace. Refit drain tubes between
the fender and frame.
NOTE: Blocked drain tubes can lead to the A/C unit
filling with condensation and leaking into the roof
headliner causing damage to electrical components.
F4-102
1
Section 4 - Lubrication & Maintenance
Every 250 Hours
F4-32
2