SHR-5000™ Dok-Lok
®
Owner's Manual
Rite-Hite
®
24 Publication:
AMEN00096 2018-05-30
MAINTENANCE
Drive Chain
A
A
B
D
E
F
G
G
C
≈ 2.5in
[64mm]
A Drive Chain
B Torque Wrench Flex-beam style (supplied by others)
C Hook position to check torque
D Mounting Bolts
E Motor
F Motor Mounting Plate
G Fittings
Inspect the drive chain (A) for dirt and chain tightness:
1 Open the motor enclosure
2 Clean the chain with solvent
3 Spray the chain with chain spray type lubricant
(Zep 2000 or equivalent)
4 Verify clutch torque at the hook shaft:
a Start with hook in position (C) with tip of hook
≈ 2.5in [64mm] above carriage side plates.
b
Use a flex-beam style torque wrench (B) to rotate
hook shaft/hook down toward stored position,
to test the torque Record the maximum torque
achieved just before clutch slips
c If the clutch torque measured is less than
500 in-lbs, gear motor should be replaced
5
The drive chain should have 1/8in [3mm] to 1/4in
[6mm] slack. To tighten chain:
a Open motor enclosure and loosen the 4 motor
mounting bolts (D)
b Pry the motor assembly forward, in the slotted
holes, until the chain is tight (with proper alignment
between sprockets)
c Hold in this position and tighten each bolt to
105 in-lbs in increments of 10 in-lbs
Tighten in this pattern:
drive
chain
check torque
with hook in
this position
(2) grease
fittings -
use
Mobilith
SHC220
no. 2
grease or
equivalent
(4) motor
mounting bolts -
tighten to 105
in-lbs in 10 in-lb
increments. Use
tightening
sequence shown
to the right
1/8" to 1/4"
slack
motor
mtg.
plate
motor
verify torque is greater
than 500 in-lbf - use a
flex-beam style torque
wrench
lubricate drive
chain - use spray
grease (Zep 2000
or equivalent)
d Test for proper chain alignment and tension
6 Close motor enclosure
Figure 14
