Graco 3A5451A, Hydraulic Pump Pulley Replacement for RoadLazer™, RoadPak™ and RoadPak™ HD Line Striping Systems, 25D849, 25D850 Instructions

Instructions
Hydraulic Pump Pulley Replacement for RoadLazer™,
RoadPak™ and RoadPak™ HD Line Striping Systems
3A5451A
For use on RoadPak™ Line Striping Systems to replace pump pulley and bushing.
For Professional use only.
Model 25D849
Model 25D850
Important Safety Instructions
Read all warnings and instructions in this manual and in related manuals.
Be familiar with the controls and the proper usage of the equipment.
Save these instructions.
Related Manuals:
3A5384
Operation
EN
Removal
Removal
3. Remove two screws from engine muffler bracket.
1. Shut engine OFF and remove key.
2. Remove front belt guard.
2
3A5451A
Installation
4. Loosen four engine mounting nuts and bolts to
relieve tension on the hydraulic pump belt. Remove
the belt.
Installation
1. Use ispropyl alcohol to clean the pump shaft, pulley
bore and bushing surface.
NOTICE
To prevent premature failure of the keyless bushing
and/or pump shaft:
•
•
•
•
Do not use impact of any kind to move it along the
shaft. Loosen, move, re-torque.
Ensure bushing bore and pump shaft are completely free of paint, grease, oil, and debris of any
kind. Thoroughly clean using non-petroleum based
solvent (isopropyl alcohol).
Pump shaft must fully engage the gripping area of
the bushing (to the groove).
Over tightening the bushing nut could result damage to the bushing or the pump shaft.
2. Insert the keyless bushing (3) into the bore of the
pulley (1) and align so that the bushing is centered
in the pulley bore. Hand tighten the hex nut on the
bushing so that it is held in the pulley.
5. Carefully rotate the pulley (1) and insert pin (2) into
either one of the two holes to prevent the pulley
from rotating.
2
6. Loosen the keyless bushing (3) and slide the pulley
and bushing off of the pump shaft together.
3A5451A
3
Installation
3. Slide the new pulley and bushing assembly onto the
pump shaft until the end of the pump shaft is in line
with the groove inside the bushing, and ensure one
of the inserts in the bushing spans across the pump
shaft keyway.
4. Ensure pump pulley is aligned with engine pulley,
insert pin (2), and torque the keyless bushing as follows: 17V419: 100 ft-lb MAX; 17V420: 125 ft-lb
MAX
5. Tighten the four engine mounting nuts and bolts to
tension belt and secure the engine.
6. Reinstall the two muffler guard screws.
7. Reinstall the front belt guard.
4
3A5451A
Parts List
Parts List
Ref. Part
1
17U023
17U024
2
114665
3
17V419
17V420
3A5451A
Description
Qty.
PULLEY, pump, RoadPak
1
PULLEY, pump, RoadPak HD
1
PIN, dowel, 3/8” x 2.75”
1
BUSHING, keyless, 3/4” dia. shaft
1
BUSHING, keyless, 1” dia. shaft
1
5
Parts List
6
3A5451A
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
For patent information, see www.graco.com/patents
Original instructions. This manual contains English. MM 3A5451
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2017, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revision A, January 2018

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