GILLIG LOW FLOOR, Service Manual

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Suspension
12. Remove set screws (16) from the two support bracket (17) nuts. Turn the two pivot screws (19)
from main housing assembly. Remove support bracket from main housing assembly (18). You
must clean off the Loctite applied to the threads in the nuts that are a integral part of the support
bracket, the pivot screws and the set screws.
Applying heat to support bracket nuts with electric heat gun or 1000
watt hair dryer will facilitate removal of set screws and pivot screws that
were secured with Loctite at assembly. Using appropriate size thread
chasers on set screws, pivot screws and support bracket nuts, and a
suitable solvent will aid in removing Loctite applied at assembly.
Do not exceed 500ºF (260ºC) or the material hardness may be affected.
Further disassembly of the main housing should not be made as the components cannot be serviced
separately, and the collets and spring are staked into the housing. Replace damaged parts.
Assembly
1 . Assemble support bracket (17) into main housing (18) subassembly so that the support bracket
teeth are on the cam-actuator (32) side of housing and the pivot screw holes are aligned. Turn the
two pivot screws (19) loosely into the assembly. Place a 1/2 inch dia. by 3 inch long bolt and nut
assembly between the support bracket flanges, close to the bracket nuts, as a tool to spread the
support bracket flanges. Begin backing the nut off of the 1/2 inch dia. bolt to spread the bracket
flange bosses against the main housing and to provide clearance for lower bearing housing (2)
when assembled into the support bracket. Remove pivot screws. Add lithium grease to taper
under pivot screw heads. Add Loctite RC680 to threads of pivot screws and two set screws (16).
Reassemble pivot screws into main housing and support bracket assembly. Torque the pivot
screw on the actuator cam side and then the other pivot screw to 50-60 in. lbs. (5.6-6.8 N-m).
Torque set screws (16) into bracket nuts to 15-25 in. lbs. (1.7-2.8 N-m).
Do not get grease on screw threads or Loctite on screw head.
2. Assemble retaining rings (13 & 11) onto wheel tube and splined sleeve assembly (10). Apply
Loctite RC680 evenly around wheel tube in the lower bearing support area and push new lower
bearing (3) onto wheel tube, and against retaining ring (11). Apply Loctite evenly around wheel
tube at the upper bearing support area, assemble bearing spacer (12) and push new upper bearing
(3) onto wheel tube until it clears upper retaining ring groove. Assemble bowed retaining ring
(1).