PAGE 32 — EM120 HYD. PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
Suspension
The cantilever (U-Type) suspension springs and associated
components (Figure 36) should be visually inspected
monthly for signs of excessive wear, elongation of bolt
holes, and loosening of fasteners. Replace all damaged
parts (suspension) immediately. Torque locknut securing
U-clamp to spring leaf between 45 and 50 ft.-lbs.
Figure 36. Suspenion Components
Lug Nut Torque Requirements
It is extremely important to apply and maintain proper
wheel mounting torque. Be sure to use only the fasteners
matched to the cone angle of the wheel. Proper procedure
for attachment of the wheels is as follows:
1. Start all wheel lug nuts by hand.
2. Torque all lug nuts in sequence. See Figure 37.
DO NOT
torque the wheel lug nuts all the way down. Tighten each
lug nut in 3 separate passes as defined by Figure 37.
CHECK FOR
TIGHTNESS
AXLE
Table 8. Tire Torque Requirements
Wheel Size
First Pass
FT-LBS
Second Pass
FT-LBS
Third Pass
FT-LBS
12"
20-25
35-40
50-65
13"
20-25
35-40
50-65
14"
20-25
50-60
90-120
15"
20-25
50-60
90-120
16"
20-25
50-60
90-120
MAINTENANCE (MIXER)
3. After first road use, retorque all lug nuts in sequence.
Check all wheel lug nuts periodically.
Figure 37. Wheel Lug Nuts Tightening Sequence
NOTICE
NEVER
use an pneumatic air gun to tighten wheel
lug nuts.
1
3
2
4
4-LUG NUTS
1
3
2
5
4
5-LUG NUTS
1
3
5
2
4
6
6-LUG NUTS
2
4
1
8
8-LUG NUTS
3
7
5
6
LUG NUTS
TORQUE WRENCH
PNEUMATIC
AIR GUN
