1. Check the piston contact face of the thrust plate (1), and the thrust plate contact face of trunnion (2) for scratches and excessive wear. 2. If the thrust plate (1) and the trunnion (2) are worn and scored, replace them.
1. Remove the internal snap ring and check the oil seals (2) for damage. 2. Check the bearings (1) for wear. 3. If the bearings are worn, replace. NOTE • After checking, coat the bearing with transmission oil and the oil seal lip with grease.
1. Check the engagement of the valve plate (2), (3) and the anchor pin (1). 2. Pushing the valve plate against the anchor pin, lift it to remove. 3. Check the valve plate for foreign particles. 4. Clean the valve plate and dry with compressed air. 5. Check the valve plate for scratches, wear and… Read More »
1. Check the polished face (1) of cylinder block for scoring. 2. If scored, replace cylinder block assembly. 3. Check the spring (2) for breakage. 4. If broken, replace cylinder block assembly.
1. Lift the pistons gently with the retainer plate (1). 2. Check the pistons for their free movement in the cylinder block bores. 3. If the piston or the cylinder block bore is scored, replace cylinder block assembly. 4. Check the slipper (4) for flatness. 5. If rounded, replace. IMPORTANT • Do not interchange pistons… Read More »
1. Check the oil seal surface (3). 2. If the pump shaft (1) and motor shaft (2) are rough or groove, replace them.
1. Measure free length of spring with vernier caliper. 2. If the free length is less than the allowable limit, replace.
1. Place for in the groove to check clearance with feeler gauge. 2. If the clearance exceeds allowable limit, replace.
1. Secure the gear with a vise. 2. Set a dial indicator (lever type) with its finger on the spline. 3. Move the shaft to measure the clearance. 4. If the clearance exceeds the allowable limit, replace them.
1. Set a dial indicator (lever type) on one of the tooth faces. 2. Clamp the mating gear. 3. Measure backlash by turning the gear to be measured. 4. If the reading exceeds the allowable limit, replace the gear.