Repair manual

Gearbox and Spider CRT Repair
wc_tx000095gb.fm 44
6.6 Gearbox Assembly
See Graphic: wc_gr001584
6.6.1 Pack area between the 2 seals (bb) with grease and press into bottom
of gearbox, lip side facing inward.
6.6.2 Reassemble the input and output shafts.
6.6.3 Oil input shaft bearings (x) and loosely insert input shaft (r) into
gearbox housing.
6.6.4 Pack upper bearing (u) with grease on output shaft (s) and lightly oil
lower bearing (w). Carefully install output shaft into housing.
6.6.5 Install input bearing cup (z) so it is flush with housing. Tap in with
rubber mallet.
6.6.6 Starting with the input shaft coupling side, replace cover (k), shim(s)
(l), and o-ring (m).
6.6.7 Replace other seal (k) and check for input shaft end play. Shaft should
have up to 0.05 mm (0.002") play. Add or remove shims under input
endcap to achieve proper end-play. Apply Loctite 243 or equivalent to
screws (j) and torque to 25 Nm (18 ft.lbs.).
6.6.8 Replace top cover (o). Replace pressure relief valve (b) if removed.
6.6.9 Tap the end of the output shaft with a deadblow hammer to seat
bearings. Check the output shaft side-play. Side-play should be 0.00
to 0.05 mm (0.00" to 0.002"). Add or remove shims as needed.
6.6.10 Apply Loctite 243 or equivalent to cover screws (n) and torque to 86
Nm (60 ft.lbs.).
6.6.11 Apply Loctite 545 or equivalent to the oil drain plug (a) and replace.
6.6.12 With the gearbox level, fill with approximately 1.83 l (62 oz.) Mobil
SHC634 synthetic gear oil through the oil fill plug (cc) located on the
side of the gearbox. Oil level should be even with the bottom of the
opening. DO NOT overfill. Wipe the threads dry on both the gearbox
and the oil fill plug, apply Loctite 545 or equivalent to the oil fill plug
threads, replace the oil fill plug and torque to 16-20 Nm (12-15 ft.lbs.).
6.6.13 For 48" models:
• Replace fan (i). Apply Loctite 243 or equivalent to center screw
(g) and install with washer (h). Torque to 10 Nm (7 ft.lbs.).
• Replace protective guard (c). Apply Loctite 243 or equivalent to 2
screws (d) and install with washers (e). Apply Loctite 243 or
equivalent to 2 studs (f) and install. Torque to screws and studs
to 3.4 Nm (2.5 ft.lbs.). DO NOT overtighten screws or cover could
be damaged.