JLG 1200SJP Service Maintenance Manual page 126

SECTION 3 - CHASSIS & TURNTABLE
2. Apply ring of Loctite 641 or equivalent adhesive to full
circumference of housing (2) bearing recess adjacent to
shoulder.
Apply complete coverage of Loctite 641 to outside
diameter of bearing (10) and assemble fully in housing
(2), retaining with internal retaining ring (11). Remove
excess adhesive with clean cloth.
Press shaft (1) through bearing (10), ensuring bearing
inner ring is adequately supported.
3. Assemble correct quantity of springs (8) in orientation
required. Refer to (See Figure 3-48.) and (See Figure 3-
49.).
Figure 3-48. Swing Brake 8 Spring Orientation
Figure 3-49. Swing Brake 12 Spring Orientation
3-80
4. Lubricate O-ring seals (15 & 17) with Molykote 55M (or
equivalent) silicone grease and assemble together with
backing rings (16 & 18) to piston (9). To ensure correct
brake operation, it is important that the backing rings
are assembled opposite ti the pressurized side of piston
(9).
5. Correctly orientate piston (9) aligning spaces with the
two dowel pin holes and, assemble into cylinder hous-
ing (2) taking care not to damage seals and carefully lay
aside.
6. Loctite 2-off pins (19) in housing (2) followed by pres-
sure plate (4) and friction plates i.e. an inner (3) followed
by an outer (6) in correct sequence.
7. Position gasket (7) in correct orientation.
8. Align two holes in cylinder with dowel pins (19) and
assemble piston & cylinder sub-assembly to remainder
of brake securing with 6-off socket head cap screws and
washers (13 & 14). Torque to 55ft/lbs. (75 Nm).
NOTE: The use of a suitable press (hydraulic or arbor) Pressing
down on cylinder end face "B" will ease assembly of the
socket head cap screws (13).
– JLG Lift – 3121142