Disassemble pump and motor housing – John Deere 318 User Manual
5. Inspect both cylinder blocks.
Check ball guide area (A) for scoring, wear and damage.
Check nine cylinder bores (B) for burrs and scoring.
Check lapped surface (C) for wear and damage.
Check spring assembly (D) for damage and free
If any part of the cylinder block is damaged, the cylinder
block assembly must be replaced.
IMPORTANT: Do not scratch machined surfaces of
thrust plates or swashplates.
6. Remove pump and motor thrust plates using a brass
7. Inspect thrust plates. Check plates for scoring and
smeared bronze material.
DISASSEMBLE PUMP AND MOTOR
1. Remove snap ring and washer (A) from both trunnion
and control shafts.
316, 318 & 420 Lawn and Garden Tractors