New Master 35 Petrol/Gasoline Impact Wrench
1. REMOVING CLUTCH SUPPORT FLANGE
2600.0460
After completing section 10 Motor Repairs Page
8 remove Gear Selector 035304 and empty oil
from Gearbox 035105. Remove six Screws
4003.0635 holding Clutch Support Flange to
Gearbox and pull apart. Always use a suitable
thread lock when rebuilding.
2. REMOVING CLUTCH 4003.1110
Remove Spark Plug 4003.5010 and fit Piston Stop
Tool 4000.0307. Turn Clutch in clockwise
direction and remove. If replacing fit a new
clutch washer 4003.0600
Assemble in reverse order.
3. REPLACING SEAL 2342.4370 & BEARINGS
2332.0200 IN CLUTCH SUPPORT FLANGE
2600.0460
Remove Circlip 2321.0200 and using a Soft
Face Mallet tap out Clutch Ring 2690.7300.
Remove Circlip 2322.0420 and from the
opposite side push out Bearings 2332.0200.
Remove Oil Seal 2342.4370 and replace if
necessary. Assemble in reverse order.
4. DISMANTLING GEARBOX 035105
Remove Ring Flange 035561 and check Bearings
2332.0351 and 2332.0300 and replace Oil
Seal 2343.0520. Remove Cluster Gear Shaft
2690.6000 and check for damage. Note
position of Gear Cluster 035104 before
removal for rebuild purposes.
Remove Circlip 2321.0160 and lift off Drive
Gear 2640.7300 then remove Circlip 135516
and from the opposite side tap Drive Gear Shaft
035119 using a Flat Punch and remove with
Bearing 2331.0170. Check for wear and damage.
Remove Satellite Gear 035551 by tapping inwards
and then remove it and the Gear Cluster. Check
both for wear or damage. Assemble in reverse
order.
When rebuilding the Gearbox always fit new Seals
and Gaskets. Use Gasket Kit 2890.1065
Please Note:
The Satellite Gear has a chamfered edge
which MUST be re-fitted in the same way as
before.
5. DISMANTLING COMPLETE HAMMER 035309
Place complete Hammer Assembly length
ways in a vice with one hole uppermost.
Carefully tighten
vice
until
Steel
Ball
2360.1032 drops out of the lower hole - a short
blast of air will assist this operation. Loosen vice
and turn Hammer over to opposite hole and
repeat previous instruction to allow second
ball to be removed and loosen vice
again. Hammer Assembly 035302 can now
be separated. Remove Shaft 035567, Spring
035566 and Bearing 2334.0210 and
inspect for wear and damage.
Re-grease
as
per
Routine
Service
item 6 on Page 7 and assemble in
reverse order.
Inspect Anvil 035572 and Hammer 035302
striking faces for wear or damage. These
are critical areas which will affect the
Wrenches performance and vibration. Refit
Hammer and Anvil to Gearbox and replace
Nose Casing 035301 with new Gasket
035562.
6. ANVIL 035572
The Square Drive is 1” (25.4mm). If this
wears by 1mm
(1/32”) or more replace it
immediately.
The wear can be checked using our No Go
Gauge.
A worn Anvil reduces speed of
operation,
increases
vibration,
damages Sockets and Accessories
and the Wrench
IMPACT UNIT
– REPAIRS
See Exploded Diagram Drawings on Pages
15 to 17
14
