Assembly Instructions
37
Step 4
Slide Tire onto Axle with Valve Stem facing
out
Thread Axle Nut onto Axle (hand tight)
Back Axle Nut off ¼ turn
Make sure Tire spins freely
Insert Cotter Pin through hole in Axle and
bend it so Axle Nut cannot come off
Make sure Tire spins freely
Tap Dust Cap onto Tire with a soft faced
mallet
Repeat steps for the other Tire
Step 5
Attach Coupler to Tow Bar using (2) 1/2” x
3” bolts and (2) 1/2” Class G Flange Nuts.
Tighten Bolts to a 90 lb-ft torque.
Attach Safety Chains to Tow Bar using 3/8”
x 3-1/4” Bolts, (2) 3/8” Flat Washer, and a
3/8” Nyloc Nut. Tighten Bolts to a 37 lb-ft
torque.
Step 6
Install Engine/Pump Assembly to Tow Bar.
Use (2) 5/16” x 2-3/4” Bolts and 5/16”
Flange Nuts.
Using a Torque Wrench, tighten all bolts to
20 lb-ft.
Install 1/2” Elbow into the pump. Tighten
fitting hand tight, and then rotate additional
1-1/2 to 2 turns to the orientation shown.
Install High-Pressure Fitting into the 1/2”
Elbow. Tighten fitting hand tight, and then
rotate additional 2 turns to the orientation
shown.
Valve Stem
Axle
Axle
Nut
Cotter Pin
Tire
Dust Cap
Tow Bar
1/2” Class
G Flange
Nut
1/2” x 3”
Bolt
Coupler
3/8” x 3-
1/4” Bolt
3/8” Nyloc
Nut
Flat Washer
Safety Chains
Tow Bar
5/16” x 2-
3/4” bolt
5/16”
Flange nut
1/2” Elbow
High-
Pressure
Fitting
