Disassemble pump and motor – John Deere 318 User Manual
18. Inspect bearing plates. Bearing plates should be flat,
free of all nicks, burrs, scratches and erosion around the
ports. The bronze metal should show no scoring,
smearing or be discolored.
NOTE: Scoring is indicated by fine scratches or grooves
cut into the plate.
When these scratches can be detected by feel,
finger nail or lead pencil, the plate should be
Some models may have a narrow slot (A) rather
then a wide slot (B). While others may NOT have
slots at all.
19. Inspect both bearings in center section, replace if
20. Install center section in bench fixture and remove
bearing using a 2-jaw puller and a slide hammer.
DISASSEMBLE PUMP AND MOTOR
IMPORTANT: Do not nick or scratch lapped surface
of cylinder blocks.
Piston-to-Bore relationship need not be
maintained; keep pump and motor
components separate, they are not
1. Remove motor and pump cylinder blocks.
316, 318 & 420 Lawn and Garden Tractors