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REEL HYDRAULIC MOTOR
The Gladiator RWP-1935 is equipped with a Heavy Duty Hydraulic Motor with a built in cushion valve for shock
protection and long motor life. The motor also contains a case drain port that is integral in extending the life of
the motor components. Always connect the case drain when running the hydraulic motor.
Motor Service Instructions:
1. To aid in reassembly of the motor, make a "V" shaped set of lines from the endcover to the housing using
either paint or a marker. With the shaft facing down, secure the motor in a vise by clamping on the housing
flange (10).
2. Loosen and remove nine bolts (22) holding the motor assembly together. Place an 11/64 x 2 ½" pin
through the endcover (21) drain port and into the manifold. (Note: If the pin is not used, the internal
components of the endcover will fall out). Remove the endcover assembly.
3. Flip the endcover assembly over. Remove the 11/64 x 2 ½" pin from the endcover (21) drain port. Remove
the manifold (16), pin (17), commutator (18), piston (19) and springs (20) from the endcover. Place the
piston (19) on a flat clean surface with piston seals (8 & 9) facing up. Remove the piston seals from the
piston (19) and discard.
4. Remove driver (15), rotor set (14) and wear plate (13) from the motor. Remove all seals from components
and discard. (Caution: Do not allow rolls to drop from rotor assembly when removing rotor
assembly from motor). Remove seal (1) from housing and discard. Remove drive link (11) and spacer
ring (12) from housing.
5. To aid in the reassembly of the shaft sub-assembly make a "V" shaped set of line across the rear of the
housing and the bearing locking nut on the shaft assembly using either paint or a marker. Remove the
housing (10) from the vise and flip over.
6. Remove any shaft hardware, using a press, press the shaft assembly (10a) out of the rear of the housing
(10). Remove the seal carrier insert (3). Remove the dust seal (2), o-ring seal (4), backup shim (5), and
quad seal (6) and discard all seals.
7. At this point all parts should be cleaned in an oil-based solvent and dried using compressed air (for safety,
observe OSHA safety guidelines). All new seals should be lightly coated in clean oil prior to installation.
8. Place new dust seal (2) into seal carrier insert (3) with the lip facing up. Place new o-ring seal (4) into outer
groove of the seal carrier insert (3). Insert back up shim (5) then quad seal (6) into seal carrier insert (3).
With dust seal (2) facing down, press seal carrier insert into housing bottom bore. Press the shaft
assembly (10a) into housing (10) lining up the "V" set of lines on the bottom of the housing and shaft
assembly.
9. Insert drive link (11) into shaft assembly (10a) and place bearing spacer (12) into housing (10).
10. If a "V" shaped set of lines was drawn on the motor prior to disassembly, use them as a guide for
reassembly to insure proper positioning of components.
11. Install the housing seal (1) in the groove on the housing (10).
12. Install the wear plate (13) with the counter bore towards the housing (10). Note: Remember to align the
"V"
13. Place body seals (7) in grooves in both sides of rotor set (14). Place rotor set (14) onto wear plate (13) with
I.D. spline chamfer facing wear plate. Rotor set must be timed. (See Figure 4 for correct rotor lobe
orientation.)
Endcover Sub-Assembly
14. Place the endcover (21) on a flat clean surface with cavity facing up. Place four springs (20) into holes in
the bottom of the cavity.
15. Install the O.D. and I.D. piston seals (8 & 9) onto the piston (19). The seals are cone shaped. The I.D. of
the outer seal and the O.D. of the inner seal should be installed towards the piston. The opposite edges
should be coming out away from the piston. (See Figure 3 for installation of the piston seals.)
Gladiator RWP-1935 01/23
© 2023 Alamo Group Inc.
MAINTENANCE
Maintenance Section 5-3
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