New Master 35 Petrol/Gasoline Impact Wrench
The Master Impact Wrench is ideal for removing/fitting Chairscrews (Lag Screws) and Fishplates (Joint
Bars) where track possession is not possible, if there are access difficulties or if other sources of power e.g.
Air Compressors, Generators or Power Packs are not available. The Master can drill holes in Wooden
Sleepers (Ties) using our Safety Quick Release Attachment which allows the fitting/removal of Auger Bits in
seconds.
If there is track possession it can be fitted to one of our Braked Tool Carriers which then makes it easier for
the operator to use in both a vertical and horizontal position. The Tool Carrier carries the weight not the
operator.
Most Screwed Fasteners can be removed/fitted in under three seconds
1. BOLT CAPACITY
16 to 32mm - (5/8" to 1
1
/4") diameter
2. DIMENSIONS
Length 600mm (23
5/8”)
Height 284mm (11")
Width
452mm (17 ¾”)
3. ENGINE-Two stroke/cycle Special Airtec EMAK065
63.4 c.c. complying with EUR5 and EPA3
Standards
Maximum free speed 9,500 rpm
Power
4.70 HP 3.5 kW
Fuel Tank capacity
0.8 Litres (1.20 pints)
Fuel Mixture ratios
Petrol/Gasoline Unleaded minimum 89 Octane,
Gasohol with less than 10% Ethanol or E10 fuel
with two stroke oil
MIX RATIO MLS.PER OZS. PER
OIL LITRE US GAL
Mineral 25:1
40
3
Synthetic 50:1
20
1
1
/2
DO NOT
use 2 stroke Outboard Motor Oil
4. GEARBOX
Fill with 0.25 Litre (1/2 pint) of Gazpromneft
Reductor CLP68, Mobil Gerar 626, Carter EP68,
Merpoa 68, Valvoline 80-90W or an equivalent non
synthetic 68 viscosity Gear Oil to half way up sight
glass with Wrench in the horizontal position. Change
Oil every twelve months.
5. IGNITION
– DIGITAL
Spark Plug Champion RCJ-4 or equivalent.
Gap should be 0.5mm
6. IMPACT MECHANISM
Fill with 130 grammes (4
1
/2 oz) of
Molybdenum
Disulphate Grease
, Castrol MS3, Klubern
N12MF, Valvoline NLG 1 # 2 or equivalent
Grade
2 quality.
7. NOISE
Operation levels based on ISO3744
Acoustic Pressure (LpA)
101.7 dBA
Power (LWA)
114.8 dBA
Always wear ear protection
8. SQUARE DRIVE
Standard 1" (25.4mm)
9. TORQUE RANGE
(500
– 2,500Nm) or (350 to 1850 ft/lbs)
approximately
It is possible to generate higher torques under
special conditions. The Master will loosen any
screwed fastener previously tightened by any
other Petrol/Gas Driven Impact Wrench.
10. VIBRATION EXPOSURE
Vibration exposure is more important than vibration
e.g. a low vibration machine which takes a long time
to perform a task generates higher vibration
exposure than a higher vibration machine which
performs a task much more quickly.
The following data is based on practical on
track testing carried out in the UK in February 2020
.
Fishplates/Joint Bar Nuts
43mm (1 11/16”) Square –
2.25 seconds
AV
LV
Vibration
Trigger
Time
Minutes
No of
Fasteners
Trigger
Time
Minutes
No of
Fasteners
Tightening
12.28m/s
2
20
533
80
2133
Loosening
11.05m/s
2
25
667
98
2613
Chairscrews/Lagscrews
38.6mm (1 1/8”) Square
–
2.5 seconds
AV
LV
Vibration
Trigger
Time
Minutes
No of
Fastener
s
Trigger
Time
Minutes
No of
Fasteners
Tightening
11.90m/s
2
21
504
85
2040
Loosening
14.72m/s
2
14
336
55
1320
The actual figures achieved can vary depending on
operator technique and condition of Wrench,
fastener, track and Socket.
11.WEIGHT
17.9 Kgs (39 ½ lbs)
USES
TECHNICAL INFORMATION
–
NEW VERSION from Serial No. MA20 A001
1
