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TRANSAXLE 21 - 57 |
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All subassemblies should be inspected and/or reconditioned when transaxle recondition is performed. Refer to appropriate subassembly in this section for recondition procedure.
ASSEMBLY SUBASSEMBLY INSTALLATION
When rebuilding, reverse the above procedure.
VALVE BODY-RECONDITION
Tighten all valve body screws to 5 Newtonmeters (40 in.lbs.)
Do not clamp any portion of valve body or transfer plate in a vise. Any slight distortion of the aluminum body or transfer plate will result in sticking valves, excessive leakage or both. When removing or installing valves or plugs, slide them in or out carefully. Do not use force.
TAG ALL SPRINGS AS THEY ARE REMOVED FOR REASSEMBLY IDENTIFICATION.
CLEANING AND INSPECTION
Allow all parts to soak a few minutes in a suitable clean solvent. Wash thoroughly and blow dry with compressed air. Make sure all passages are clean and free from obstructions.
Inspect manual and throttle valve operating levers and shafts for being bent, worn or loose. If a lever is loose on its shaft, it should be replaced. Do not attempt to straighten bent levers.
Inspect all mating surfaces for burrs, nicks and scratches. Minor blemishes may be removed with crocus cloth, using only a very light pressure. Using a straightedge, inspect all mating surfaces for warpage or distortion. Slight distortion may be corrected, using a surface plate. Make sure all metering holes in steel plate are open. Using a pen light, inspect bores in valve body for scores, scratches, pits and irregularities.
Inspect all valve springs for distortion and collapsed coils. Inspect all valves and plugs for burrs, nicks, and scores. Small nicks and scores may be removed with crocus cloth, providing extreme care is taken not to round off sharp edges. The sharpness of these edges is important. They prevent foreign matter from lodging between valve and valve body, thus reducing possibility of sticking. Inspect all valves and plugs for freedom of operation in valve body bores.
When bores, valves, and plugs are clean and dry, the valves and plugs should fall freely in the bores. The valve body bores do not change dimensions with use. Therefore, a valve body that was functioning properly when vehicle was new, will operate correctly if it is properly and thoroughly cleaned. There is no need to replace valve body unless it is damaged in handling.
Fig. 1 Detent Spring Attaching Screw and Spring
Fig. 2 Remove Valve Body Screws
Fig. 3 Remove or Install Valve Body Screws
21 - 58 TRANSAXLE |
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Fig. 4 Transfer Plate and Separator Plate |
Fig. 7 Throttle Shaft E-Clip, Washer, and Seal |
Fig. 5 Steel Ball Locations |
Fig. 8 Manual Valve Lever Assembly |
Fig. 6 Remove or Install Throttle Shaft E-Clip |
Fig. 9 Throttle Valve Lever Assembly |
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TRANSAXLE 21 - 59 |
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Fig. 10 Manual Valve |
Fig. 11 Pressure Regulator and Adjusting Screw |
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Bracket |
Fig. 12 Pressure Regulators and Manual Controls
21 - 60 TRANSAXLE |
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Fig. 13 Governor Plugs
Fig. 14 Pressure Regulator Valve Plugs
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TRANSAXLE 21 - 61 |
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Fig. 15 Shift Valves and Shuttle Valve
PUMP OIL SEAL-REPLACEMENT
The pump oil seal can be replaced without removing the pump and reaction shaft support assembly from the transaxle case.
(1) Screw seal remover Tool C-3981 into seal (Fig. 1), then tighten screw portion of tool to withdraw the seal.
(2) To install a new seal, place seal in opening of the pump housing (lip side facing inward). Using Tool C-4193 and Handle Tool C-4, drive new seal into housing until tool bottoms (Fig. 2).
Fig. 17 Install Pump Oil Seal
Fig. 16 Remove Pump Oil Seal