TANK GP-EXPANSION 2607454 - Caterpillar

Operational Checks
With the engine running, move the transmission speed selector lever to all positions. The detents should be felt in each position.Operate the machine in each direction and at all speeds. Listen for unusual noises and determine their source. If improper operation is observed, refer to the OPERATIONAL CHECK LIST for "problems" and "probable causes."Operational Check List
Transmission
PROBLEM Does not operate in any speed or slips in all speeds. PROBABLE CAUSE:1. Low oil pressure due to: a. Low oil level.b. Control linkage broken, loose or improperly adjusted.c. Oil pump or oil pump drive failure.d. Air leaks on inlet side of pump.e. Leakage within transmission.f. Pressure modulating relief valve spool improperly adjusted or stuck open.g. Load piston or differential and safety valve spool stuck.2. Mechanical failure in transmission.3. Torque converter failure.4. Bevel pinion and/or bevel gear failure. PROBLEM: Operates in reverse speeds only or in forward speeds only. PROBABLE CAUSE:1. Control linkage broken, loose or improperly adjusted.2. Worn discs and plates and/or broken parts in directional clutch.3. Excessive leakage in connections and/or clutch piston seals of directional clutch. PROBLEM: Transmission does not shift. PROBABLE CAUSE:1. Low oil level.2. Low clutch pressures.3. Improper linkage adjustment or worn or broken parts. PROBLEM: Sluggish shifting. PROBABLE CAUSE:1. Low oil pressure.2. Improperly adjusted internal and external control system linkages.3. Air leaks on inlet side of pump.4. Load piston or differential and safety valve sticking in pressure control valve. PROBLEM: Rough shifting. PROBABLE CAUSE:1. Improperly adjusted control system linkage.2. Improper initial setting of relief valve.3. Sticking load piston and/or differential and safety valve spool.4. Weak or broken valve springs. PROBLEM: Does not operate in one speed (forward or reverse) or operates in one speed only. PROBABLE CAUSE:1. Control linkage broken, loose or improperly adjusted.2. Worn discs and plates and/or broken components of the clutch in question.3. Excessive leakage in connections and/or clutch piston seals of the clutch in question.4. Clutch plates broken, binding ring gear of the clutch in question. (Torque converter will stall in all other speeds.) PROBLEM: Transmission remains in gear when selector lever is in NEUTRAL. PROBABLE CAUSE:1. Control linkage broken, loose or improperly adjusted.2. Directional clutches not releasing. PROBLEM: Transmission engages, torque converter stalls and engine under load condition. Machine does not move. PROBABLE CAUSE:1. Locked transmission. a. Broken parts.b. One or more clutches improperly engaged.2. Broken teeth on bevel pinion or bevel gear.3. Broken teeth on pinion and/or gears in final drives. PROBLEM: Overheating of the transmission. PROBABLE CAUSE:1. Low oil level.2. Oil cooler core partially plugged.3. Excessive clutch drag.4. Low oil flow as a result of a worn oil pump or extreme leakage in the hydraulic system. PROBLEM: Unusually noisy pump. PROBABLE CAUSE:1. An intermittent loud popping sound which gives the impression that foreign materials are passing through the pump is caused by pump cavitation.2. A constant loud milling or gritting noise is an indication of pump failure.Torque Converter
PROBLEM: Torque converter overheating. PROBABLE CAUSE:1. Improper operation of machine. Constant overloading.2. Faulty temperature gauge.3. Cooling system of machine faulty.4. Mechanical