Branson F42r - Hst [Hst Model]

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42hW-201601
CHAPTER 6 HYDRAULIC SYSTEM
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3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
7.9 HST [HST MODEL]
1. Unscrew the drain plug (1) from the bottom of the Unscrew the drain plug (1) from the bottom of theUnscrew the drain plug (1) from the bottom of the
HST front cover to drain oil.
8-mm L-shape wrench
A42W632A
M12 BOLT 8 EA
10-mm L-shape wrench
2. Unscrew eight HST front cover mounting bolts (1) to Unscrew eight HST front cover mounting bolts (1) toUnscrew eight HST front cover mounting bolts (1) to
remove the front cover (2).
FRONT COVER DISASSEMBLY
3. Remove the plug (1), spring (2), spring seat (3) andRemove the plug (1), spring (2), spring seat (3) and
spool (4) from the upper section of the front cover.
Then, remove the main relief valve (5).
10-mm L-shape wrench
8-mm L-shape wrench
K25W662A
Align the grooves (A) of the valve plate with
the knock pin (1) of the HST case during as-
sembly.
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Notes
C865W764A
A42W633A
A42W634A