35
17.6 Remove pan bearing nut (47) and pull out two dowels (46). An M3 screw may be installed in the
dowels to assist in removal.
17.7 Note orientation and remove four screws (23) and three screws (24) securing brake reaction
plate (22) to base (1).
17.8 Pull off the brake reaction plate and remove the assembled pan drag/brake mechanism from the
base.
18
To dismantle the pan drag/brake mechanism, proceed as follows
:
18.1 Remove eight screws (25) securing pan brake disc (19) and brake disc clamp ring (26) to four-
hole mounting plate (20) and pan drag unit assembly (17). Drive out two Spirol pins (18).
18.2 Remove eight screws (21) securing pan drag unit assembly (17) in mounting plate (20).
18.3 Remove thrust race (27) and upper thrust bearing race disc (16) from pan sub-plate assembly
(9).
18.4 Remove circlip (5) and ‘V’ ring (6) from brake plunger. Remove and discard 'O' ring (4) from the
boss in the pan sub-plate (9). Remove self-locking ring (7) and spring (8) from each pillar of the brake
shoe assembly (15) and remove brake shoe assembly from the pan sub-plate (9).
18.5 Remove two circlips (3), gear strap (12) and gear strap shims (13). Pull off the idler gear (10),
bevel gear assembly (14) and bevel gear shims (11).
Assembly
Pan drag/brake mechanism
19
To assemble and install the pan drag/brake mechanism, proceed as follows
19.1 Sparingly lubricate the shaft and pillars of brake shoe assembly (15) with LM grease and install in
the sub-plate (9). Install a spring (8) and self-locking ring (7) on each pillar of the brake shoe assembly.
Install ‘O’ ring (4) over the boss in the sub-plate (9). Install ‘V’ ring (6) and circlip (5) on brake plunger,
ensuring ‘V’ ring is correctly oriented.
19.2 Sparingly lubricate the gear pillars of the sub-plate (9) and the running faces of shims (11), the
bevel gear assembly (14), the idler gear (10) and gear strap shims (13) with LM grease.
19.3 Install shim (11) and the bevel gear assembly (14) on the left-hand pillar of the sub-plate (9).
WARNING!: The pan drag assembly is an hermetically sealed unit. Do not attempt to
dismantle the pan drag/brake mechanism beyond the level detailed below.
NOTE:
All ‘O’ rings, seals and spring clips removed during disassembly should be renewed.
NOTE:
Ensure grease does not contaminate brake surface of brake shoe assembly (15).
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