Spicer Speciality Axle Division - Technical Publications
BRAKE SHOE ASSEMBLY Cont.
Smear bore of one of brake shoe rollers (37) also roll pin holes in brake shoes (66) with grease
(BP Energrease AS11 or equivalent). Locate roller (37) in position, fit brake shoe roller pin (41) so that
headed portion will be towards brake bracket (29) when fitted. Secure in place with brake shoe roller
pin split pin (36). Splay pin (36) to approx 30° as shown in fig no. 3. to avoid fracture of leg.
Repeat operation 9.4 for other brake shoe assembly.
FINAL ASSEMBLY OF BRAKE Ref. Fig 4.
Wipe clean inner surfaces of brake shoe bushes (67) and smear with Shell ` Retinax LX' or equivale t
Fit brake shoe to brake bracket as follows:-
Assemble a brake shoe pivot setscrew washer (64) and a brake shoe pivot bush
setscrew (65) together, then screw into one end of one of brake shoe pivot pins (63),
Smear pivot pin bore in brake bracket (29) with BP Energrease AS11 or equivalent
Position first brake shoe (66) on brake bracket (29). Insert partially assembled pivot pin
in pivot pin hole either side of brake shoe, from inboard side, passing through brake
bracket and into other bushed hole as shown.
Using pivot pin setscrew (65), rotate pivot pin until countersunk hole in pivot pin is in line
with threaded hole on brake bracket (29).
Screw a brake shoe pivot pin lockscrew (61) into threaded hole in brake bracket (29) to
locate in countersunk hole in pivot pin (63), thus locking pivot pin then tighten
lockscrew (61) to 26 - 32lbs.ft. (35 - 43Nm.).
Care must be taken during this operation as misalignment can cause brake drum
Fit other brake shoe pivot pin setscrew and washer (65 & 64) and tighten setscrews to
26 - 32lbs.ft. (35 - 43Nm.).
Repeat above operations for other brake shoe assembly.
Secure pivot pin setscrews (65) with 18SWG lockwire as shown in fig. no. 4.
Cross section through dry pivot pin assembly
showing bush arrangement also lockscrew
being fully located in countersunk hole
Dry pivot pin
FIg. No. 4.
Manual No. 1785 Issue A
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