Cub Cadet 310-3000 - Manual (Page 29)

310-3000 IHT 25
MOTOR/CENTER SECTION/
PUMP ASSEMBLY
Refer to Figures 16 and 17, (next pages).
NOTE: Brake Assembly, Input As sem bly,
Charge Pump Assembly, and Low er
Hous ing/Filter/Manifold As sem bly have
to be removed before the fol low ing steps
can be per formed.
DISASSEMBLY
1. Remove washer (82), snap ring (83), washer
(82), 16T pin ion gear (28), spacer (27), and
shaft (28).
2. Remove motor thrust bearing re tain er
(57).
3. Remove motor thrust bearing (25), and 21cc
motor cyl in der block assembly (21).
4. Remove each piston (23), spring (18), and
piston seat (22) from the 21cc motor cylinder
block assembly.
5. Remove bypass plate (38) from center sec-
tion assembly (3).
6. Remove the three screws (44) from center
section as sem bly (3).
7. Lift center section assembly (3) out of main
housing (1).
8. Remove the two center section assembly
pins (43).
9. Remove bypass actuator (39) from the cen-
ter section (3).
10. Remove 10cc pump cylinder block as sem bly
(15).
11. Remove each piston (17), spring (18), pis ton
seat (16) from the 10cc pump cylinder block
as sem bly (21).
12. Remove block spring (14), and block thrust
washer (13) from shaft (12, Figure 10)
INSPECTION
1. Inspect running surface of thrust bearing
(25) for ex ces sive wear (grooving or smear-
ing).
2. Inspect each piston (23), spring (18), and
pis ton seat (22) in the mo tor cylinder block
as sem bly.
3. Inspect seal lands of the 21cc motor cylin-
der block as sem bly (21) for excessive wear
(groov ing or smearing).
4. Inspect the two running surfaces of center
section as sem bly (3) for excessive wear
(groov ing or smearing). Abnormal wear
pat terns will usually be visible. Any wear
de tect able when a fi ngernail is dragged
across the surface is cause for rejection.
5. Inspect each piston (17), spring (18), piston
seat (16).
6. Inspect seal lands of 10cc pump cylinder
block assembly (15) for excessive wear
(groov ing or smearing).
ASSEMBLY
1. Install pump cylinder block thrust washer
(13) and spring (14) onto input shaft as-
sembly (12).
2. Install piston washers (18), springs (17), and
pistons (18) in cylinder block (15).
3. Install pump cylinder block assembly (15).
Be sure spring tension is even around the
entire block.
4. Install the two center section assembly pins
(43).
5. Install center section assembly (3) into main
housing (1). Make sure center section seats
fully on its mating surface.
6. Secure center assembly section (3) by in-
stall ing three screws (44) reference Table
5, Page 13. Ap ply a few drops of loctite on
screws when in stall ing.
7. Install bypass plate (38) into center section
assembly (3).