Trelawny Single Scaler Heavy Duty, Operation And Maintenance Manual, Page: 8 / 12

PARTS LIST
Item
No
Part No Description
Item
No
Part No Description
1 615.3021 Valve Cap 19 615.5361 Spring Cap
2 809.0139 O’ Ring - Valve Cap 20 612.5301 Piston (Std taper fit)
3 712.3022 Valve Spring 21 613.5301 Cylinder (Std taper fit)
4 618.3022 Valve Stem 22 614.5301 Brush Seal
5 809.0089 O’ Ring - Valve Seat 23 611.5301 Triple Scaler Body (Std taper fit)
6 616.5321 Valve Body 611.5355 Triple Scaler Body (H/Duty)
*423.5321 Valve Body Assembly 24 411.5101 Single Scaler Body (Std & H/Duty)
7 716.3000 Throttle Lever 411.5121
Single Scaler Body (Vibration Reduced,
Std and H/Duty)
*716.1000 Throttle Safety Lever 25 426.5351 Cruciform Head (Taper Fit)
8 813.0108 Roll Pin 26 426.5352 Bush Hammer Head (Taper Fit)
9 711.5301 Adaptor 27 606.5303 Beryllium Copper Head (Taper Fit)
10 624.5301 Main Handle (Standard Tools)
624.5350 Main Handle (Vibration Reduced) 29 613.5303 Cylinder (H/Duty)
11 717.5301 Rubber Grip
12 625.5301 Locknut 31 827.0428 Cutterhead Removal Pin
13 810.9001 Sealing Washer 32 633.5301 Cutter Head Removal Washer
14 634.5301 Hexagon Plug 33 612.5320 Single Piece H/Duty Piston (Cruciform)
15 822.5302 Side Handle Grip 612.5325 Single Piece H/Duty Piston (Bush)
16 422.5315 Side Handle
17 615.5341 Screwed Cap 36 719.1380 Flexible Connector
18 712.5301 Compression Spring 37 821.2000 Hose Clamp
*Items not shown in exploded view
*633.5301 Single Scaler Vacuum Shroud
*437.5300 Triple Scaler Vacuum Shroud
*731.0120 Vacuum Shroud Seal
TROUBLE SHOOTING
Poor performance or lack of
power
Low air pressure. Ensure that the air pressure is correct at 90psi, max 100psi.
If tool has been left for some time without use, the oil
may dry out slightly causing a sticky residue.
Strip tool down and re-oil.
Tool worn out, can you feel side ways movement
between the piston and cylinder bore.
Replace the piston and cylinder, along with a new bush
seal.
Tool continues to run with
trigger released
Valve seal may have become dislodged through the tool
being disconnected with the trigger in the open position.
Ensure that the trigger has not been taped or wired in the
open position.
Do not use quick release couplings to switch tool off.
Tapered cutterhead will not
stay on piston
To high an air pressure being used, piston hits bottom of
cylinder causing head to be jettisoned.
Ensure that the air pressure is correct at 90psi, max 100psi.
Traces of oil remained on the tapered surfaces when
replacing cutter head.
Ensure that the cutterhead and pistons tapers are
completely free of oil, use a good degreasing agent and
clean cloth prior to assembly.