Lit. No. 26182
7
November 5, 2003
27750 LD
HYDRAULIC UNIT INSTALLATION
Preparing Rams for Installation
1. Remove the plug from the ram port.
2. Turn the jam nut on the fitting as far back as
possible.
3. Lubricate the O-ring with clean hydraulic oil.
4. Screw fitting into port by hand as far as it will go.
The washer should contact port face and shoulder
of the jam nut threads.
5. Unscrew fitting to proper position, no more than
one full turn.
6. Use one wrench to hold the fitting body in position
and tighten the jam nut with another wrench until
the washer again contacts port face. Tighten 1/8 to
1/4 turn to lock fitting in place.
7. Attach 22" HP hose to lift ram. Attach a 32" HP
hose to the passenger-side ram. Attach a 42" HP
hose to the driver-side ram.
Fi
tt
i
ng
Jam
N
ut
Washer
O-
R
i
ng
Ram
Attaching Lift and Angle Rams
1. Attach the lift ram to the headgear and lift arm with
two 1" x 3-5/16" clevis pins and 1/4" x 1-1/2" cotter
pins.
2. Attach the angle rams to the A-frame and blade
with the four anchor pins and cotter pins. Note
that the ram ports are on the inside, nearest the
A-frame.
Ang
l
e
Ram
1
/4" x
2
"
Cotter
P
i
n
1
" x 4"
Anchor
P
i
n
1
" x 4-
3
/4"
Anchor
P
i
n
1
/4" x
1
-
1
/
2
"
Cotter
P
i
n
1
" x
3
-
5
/
16
"
C
l
ev
i
s
P
i
n
Li
ft
Ram