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identical fitting to “In/Pressure” port of bulkhead con-
nection. Orient fittings so that free ends of fittings
point horizontally toward center of backhoe.
6. Take one end of 28” hydraulic hose (23) and route
under foot platform, through hole at top of left hand
backhoe side plate, and connect to 90° adapter fit-
ting (27) at inlet of filter base. Connect free end of
hose to 90° JIC adapter fitting (28) on “Out/Return”
port of bulkhead connection.
7. Assemble small 90° beaded tube fitting (26) to inlet
port at left rear of hydraulic reservoir and connect 24”
return hose (21) from this fitting to 90° beaded tube
fitting (26) on filter base. Secure hose to fittings at
either end using two small hose clamps (32).
8. Assemble torque plate (33) to PTO pump (12)
using 1/2” x 1-1/2” bolts (3), lock washers (8), and
hex nuts (11). Torque plate may need to be re-orient-
ed later to accommodate different tracator configura-
tions.
9. Align key slot in PTO adapter (13) with Woodruff
key on PTO pump shaft and slide PTO adapter onto
pump shaft allowing 1/8” clearance between adapa-
ter and pump face. Secure PTO adapter to pump
shaft with two 5/16” x 3/4” set screws (14). Place
5/16” hex nuts (9) on set screws and tighten nuts to
prevent set screws from loosening.
10. Assemble large 90° beaded tube fitting (24) to
outlet port at right rear of hydraulic reservoir and ori-
ent free end of fitting horizontally pointing toward left
side of backhoe.
11. Assemble large 0-ring boss adapater (30) to “IN”
port on PTO pump, tightening fitting until it completely
bottoms-out on pump. Connect 90° beaded tube fit-
ting (25) to 0-ring adapter. Beaded tube fitting may
need to be reoriented later for proper hose routing.
12. Connect 30” suction hose (19) between 90°
beaded tube fittings (24, 25) on hydraulic reservoir
and PTO pump and secure hose to fittings at either
end with large hose clamps (20).
13. Assemble small 0-ring boss adapter (31) to
“OUT” port on PTO pump tightening fitting until it
completely bottoms-out on pump. Connect 90° JIC
adapter (29) to 0-ring adapter. JIC adapter may need
to be reoriented later for proper hose routing.
14. Connect 36” hydraulic hose (22) between 90° JIC
adapters (29, 28) on PTO pump and “In/Pressure”
port on bulkhead connection.
IMPORTANT - If hoses are hooked-up incorrectly,
serious damage to the backhoe will result.
15. NOTE: Initial filling of backhoe reservoir
requires 7 gallons of fluid. Fill reservoir with recom-
mended fluid to correct level, referring to Service
Section in Backhoe Operator’s Manual. DO NOT
overfill reservoir or oil may be forced out through
breather cap during backhoe operation.
16. Mount backhoe to tractor at this time following
procedure in Attaching Kit Manual.
17. Slide complete PTO pump assembly onto tractor
PTO shaft until PTO adapter (13) locks into groove
on PTO shaft. Make sure kinks do not develop in any
hydraulic lines. Suction hose (19) can be shortened
to help prevent kinks. Adjust orientation of 90°
adapter fittings (25, 29) on PTO pump (12) as
required to remove kinks or sharp bends in hoses.
DO NOT REMOVE TRACTOR PTO GUARD
18. Torque plate (33) may be adjusted (flipped front-
to-back or bottom-to-top) on pump for proper fit-up to
tractor drawbar or 3-Point Hitch Kit, if necessary.
Optimum position is to mount plate pointing down
and over drawbar with offset in torque plate facing
towards tractor. (Refer to Figure 18)
An alternate position for torque plate is to mount it
pointing upward straddling upper bar of 3-Point Hitch
Kit. Regardless of which mounting position is used
with torque plate, PTO pump must be restrained from
rotating.
IMPORTANT- When mounting backhoe with 3-
Point Hitch Kit, do not let hydraulic lines become
entangled in any part of Hitch Kit during installa-
tion. Ensure that both pressure and suction
hoses are free from kinks or twists to reduce
back pressure and to prevent excessive heat
build-up.
19. Start tractor engine and engage tractor PTO.
Cycle backhoe through all of its functions several
times to remove air from cylinders and hydraulic lines
until all functions operate smoothly. After cycling all
backhoe functions, check oil level with backhoe
extended to full reach and bucket rolled-back and
resting on ground. If oil level on dipstick is below
“ADD” line, add oil to bring oil level up to “FULL” line.
DO NOT overfill reservoir or oil may be forced out
through breather cap during backhoe operation.
HYDRAULIC HOOK-UP TO TRACTOR
If the optional PTO Pump Kit is to be used, refer to
the instructions for that kit for proper assembly.
There are four basic methods of hooking up the
backhoe to the hydraulic system of a tractor. The cor-
rect method for the particular tractor will depend on
the remote couplers available, whether a loader
31
CAUTION