SECTION THREE – SERVICE AND MAINTENANCE
49-166 Rev D
Dri-Eaz HVE Large Loss
Page | 32
DRIVE BELTS, PULLEYS AND HUBS
Check pulley set screws and hub screws after the first 25 hours of operation and again at 100 hours. Re-
torque these screws with a torque wrench. Follow the torque values on the following table. Check pulley
set screws and hub screws every 500 hours thereafter.
NOTE: Ensure belts are properly tensioned after checking the torque values. Use Gates EPDM belts.
Ensure that when you re-torque the screws, you use a clockwise pattern and continue until the proper
torque is achieved.
TORQUE VALUES
Component
Inch/lbs
Foot/lbs
Vacuum Pump Hub #38-032
180
15
BELT REPLACEMENT PROCEDURES FOR THE HVE-LL
1.
Disconnect the negative battery terminal.
2.
Remove the hose from the recovery tank
to the vacuum pump.
3.
Remove hoods.
4.
Remove top panel.
5.
Remove left and right hand belt guards.
6.
Remove the clamp between the blower
and the silencer.
7.
Loosen all 4 blower mounting nuts.
8.
Slide the blower back (away from
engine).
9.
Lower front two nuts located under the
front of the blower mounting plate
approximately 1/2”.
10.
Tip the back of the blower up.
11.
Remove all belts. Install new belts.
12.
Reverse procedures to install new belts,
lower the back of the blower and slide
the blower forward, raising the front two
nuts to the same height as the rear nuts.
13.
Tighten all nuts to tension belts, checking
for proper tension and alignment. Use a
belt gauge to check tension. Set
deflection to 1/8”; 10 to 12 lbs. of
tension.
14.
Check pulleys for alignment using a
straight edge (example: 1/2” key stock
bar). Make sure pulley flange touches on
2 places on each pulley (4 total).
(Estimated time 2 hours)
