P/N 1808922 Rev. C
4
Spring Pivot Installation - Tandem Axle Hydraulic Housing Assembly
STEP 2A
: Use mounting plates, elbows and tubes to fabricate
spring pivot supports for spring assemblies, modifying
components as needed (see next page for necessary
dimensions).
STEP 1:
Determine location for spring assemblies. To locate
center of spring assemblies to support arms to cover
up to a 40-yard container, measure 147" from back of
base assembly. To ensure tarp does not extend past
rear of container, load truck’s largest container onto
truck and center spring assemblies between base
assembly and rear of container.
NOTE:
Fenders on most trucks are not strong enough to
support spring assemblies. Fabricate spring pivot supports
to support weight and torsion of spring assemblies. Supports
must be square and level for system to operate correctly.
IMPORTANT:
Locate spring assemblies as low on truck frame
as possible to allow clearance between roll-off container and
spring assemblies. Top of spring assemblies must be less
than 5" above rollers used to support container. If needed,
pull container onto truck and check for clearance.
Item Part #
Description
1. 1808664 Bridge Mount Spring Assembly -
Passenger Side
2. 1808665 Bridge Mount Spring Assembly -
Driver Side
3. 1808673 Frame Mount Plate - 3" Sq. Tube
4. 1808646 Frame Mount Gusset
5. 1808678 End Cap - 2 1/2" Square Tube
6. 1808679 Spring Pivot Mount Tube
7. 1808675 Spring Pivot Support Elbow
8. 1808672 Spring Pivot Support Tube
H. 1804139 Cap Screw - 3/8" x 3 1/4"
Q. 1800993 Nylon Lock Nut - 3/8"
Y. 1800994 Flat Washer - 3/8"
1
2
3
4
5
8
7
6
H
H
Y
Q
147"
NOTE:
Do not weld directly to truck frame as this can weaken
frame and potentially void warranty. Use mounting plates and
drill 5/8" holes and fasten with grade 5 or better 5/8" bolts,
washers and nuts (not included), or weld components to
structure existing on truck frame.
plate
support
tube
elbow
gusset
mounting
tube
