5-48 4203781 First Edition
HYDROSTATIC POWER TRAIN
5
3. Remove six screws (10) and lock washers (11) from
pump drive flange (12) and flywheel (3).
!
WARNING
4. Attach a suitable lifting device to the engine.
NOTE
\
It may be necessary to unbolt the muffler down pipe from
the exhaust manifold flange to allow engine movement.
5. Remove the four engine mount screws (1), washers
(2), nuts (6), and lock washers (5), and carefully
move the engine to the rear of the mower as far as
possible.
6. Slide the U-joint (9) off the traction pump input shaft,
and remove the U-joint/pump drive flange assembly
from the mower.
7. Remove four nuts (7), lock washers (8), and screws
(4), and remove the U-joint (9) from the pump drive
flange (12).
Installation Notes
• Install traction pump U-joint by reversing the order of
removal.
• Replace hydraulic oil filter.
• Refill hydraulic oil tank. (Refer to “Parts and
Maintenance Manual” for oil specifications.)
• Start engine. Check hydraulic system for leaks.
Repair as necessary.
• Check hydraulic oil level and add if necessary.
Traction Pump
Removal and Installation
See Figures 5-44 and 5-45.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Remove seat and seat platform. (See “Seat and Seat
Platform” on page 9-10.)
3. Drain hydraulic oil tank. (See “Hydraulic Oil Tank—
Drain Procedure” on page 6-58.)
4. Remove gear pump. (See “Gear Pump” on
page 6-58.)
Figure 5-44
5. Thoroughly clean the pump, especially the area
surrounding the hydraulic hoses and fittings.
NOTES
• Label all hydraulic hoses before disconnecting to
ensure correct installation.
• Close all openings with caps or plugs to prevent
contamination.
6. Disconnect hoses (13 and 14) from tee fitting (4).
7. Disconnect hoses (1 and 2) from tee fitting (3).
8. Disconnect hoses (6 and 7) from tee fitting (5).
9. Disconnect hose (8) from tee fitting (9).
10. Disconnect hoses (10 and 12) from tee fitting (11).
Prevent personal injury. Use a properly rated
lifting device. Always be sure the load is
balanced before lifting.
TN2324
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