b. After Overhaul. A complete cleanup of the transmission system after an overhaul cannot be assumed. See Paragraph 6–20 for cooler flushing procedure. NOTE: When equipment to flush the oil cooler is not available, install a filter in the cooler line between the oil cooler and the transmission “from cooler” port. The cooler circuit pressure drop specifications must still be met (see AS64–071 or AS 64–072 in the Allison Sales Tech Data book). Frequent initial changes of this filter element may be required as debris is flushed out of the oil cooler circuit. Closely monitoring change in cooler circuit pressure drop will indicate when a filter change is needed.
4–5. CHECKING CONTROLS a. Inspection. Inspect the following and correct any faulty conditions: • Shift selector: — improper operation — improper cable routing • Cab and chassis wiring harness: — poor connections — frayed insulation — wiring damage • Throttle sensor components, if present: — freedom of movement — improper routing — bellows damage — improper or loose cable mounting • PTO controls, if present: — damage — wear — improper operation — lubrication — electrical harness connections and wiring damage • Temperature gauge: — capillary tube damage (if used) — sensor damage 31
