DOGA PNEUMAT 4 CRT Serie User manual

INSTRUCTIONS MANUAL
PNEUMAT
4 CRT Serie
Pneumatic
angle nutrunner

IMPORTANT
The tool delivered with this manual may have been modified for specific needs.
In that case, please give us the tool code number written on our shipping note or the approximate tool delivery date
when you will place an order for a new similar tool or for spare parts.
In that way, you will be sure to get the required tool and/or spare part.
WARNING
This information has to be kept in a location known by all users.
Each operator has to read carrefully this manual before installing, using, and mending the
product.
Be sure that the operator has understood using recommendations and the meaning of signs put on the product.
Most accidents could be avoided respecting this Instructions Manual. As a matter of fact, they were created
according to European laws and norms regarding products.
In each case, please respect and follow safety national norms. Do not take off nor damage the stickers or advise
put on the product and above all the details imposed by the law.

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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SUMMARY
CARACTERISTICS ................................................................................. p. 5
OUTLINE ................................................................................................ p. 6
1. PUTTING INTO OPERATION ................................................................. p. 7
2. GENERAL INSTRUCTIONS.................................................................... p. 7
3. RT PNEUMAT LIMITER FUNCTIONING ............................................... p. 7
4. STARTING LEVER ORIENTATION WITH REGARD TO THE HEAD .... p. 8
5. TORQUE ADJUSTMENT........................................................................ p. 8
6. ASSEMBLY AND DISASSEMBLY RECOMMENDATIONS.................... p. 8
6.1 Control of the limiter set clearance..................................................p. 9
6.2 Control of the flap locking................................................................p. 9
6.3 Control of the flap opening..............................................................p. 10
7. LUBRICATION ........................................................................................ p. 10
RT PNEUMAT LIMITER.......................................................................... p. 11
EXPLODED VIEW 4 CRT ** LR* Co...................................................... p. 12
GENERAL PLAN .................................................................................... p. 13 - 14
NOMENCLATURE AND RECOMMENDED WEAR SPARE PARTS ..... p. 16 - 18
WEAR SPARE PARTS LIST................................................................... p. 19

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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CARACTERISTICS
DESCRIPTION
5391 ISO
Assembly pneumatic portable tools
Angle nutrunner
5393 ISO
Torque control tools
PNEUMAT
4 CRT reversible air shut-off wrenches equipped with a 90° angle fited with
a 3/8” drive square.
CARACTERISTICS
Dimensions according to drawing 22621
Male square drive 3/8”
Weight 1,7 kg
Performances checked under 5,3 bars lubricated dynamic
Idle-running speed :
4 CRT 25 LR7 700 rpm
4 CRT 25 LR5 540 rpm
4 CRT 30 LR4 380 rpm
4 CRT 30 LR3 280 rpm
Noise level (NFS 31-031) < 80 Db (A)
Vibration level < 2,5 ms2
Maximum utilisation torque (assembly L / ISO 5393) :
4 CRT 25 LR7 17 Nm
4 CRT 25 LR5 23 Nm
4 CRT 30 LR4 33 Nm
4 CRT 30 LR3 40 Nm
Consumption in dry and lubricated air 650 NI / mn
Extreme pressure on duty 6,3 bars
Pneumatic connection ¼” gaz
OPTIONAL EQUIPMENT
Installation of 2 pneumatic information sockets (PI option).
Turning suspension ring.
Exhaust sheath.
Material in accordance with the EN 792-6 standard document according
to 89/392/CEE, 91/368/CEE, 93/44/CEE, 93/68/CEE instruction provisions.

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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OUTLINE

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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1. PUTTING INTO OPERATION
Supervise the compressed air duct.
Use the ducts, accessories and connectors in good state and adapted to the working effective
pressure fixed by the manufacturer.
Make sure the working pressure is not superior to 6.3 bars and inferior to the recommended
pressure during the screwdriver rotation. An excessive pressure will result in an accelerated
tool damage.
Make sure that the tool exhaust is not clogged and that the tool is correctly fixed to the
suspension device if you use one.
Take into account the tool reactions while functioning and be sure to be able to contain
pressure at the end of the tightening.
Keep a safe headway so that any tool normal reaction while functionning doesn’t bound
surrounding elements and especially during the untightening.
Use the most often possible carriers or reaction bars judiciously placed.
Be careful with the risk of snapping up of clothes, hairs, etc... by the rotary spindle during the
putting into service of the tool.
Remove the hands of the tool turning part.
Make sure the assembly caracteristics correspond to the tool performances.
Do not over-charge your tool. Check and respect the power range and the recommended
working pressure.
Only use sockets and fastening accessories made to be used on machines.
2. GENERAL INSTRUCTIONS
Your screwdriver must be used cautioustly ; do not let it fall down or make impacts on it.
It is recommended to establish a preventive maintenance programm in order to avoid
numerous repairs and to preserve the optimal performances of your tool.
Before any intervention on the tool, switch off the tool from the compressed air network. Have
your tool repaired by a qualified technician.
The use of spare parts no sold by your provider may bring a decrease of performances and
cancels all warranties towards the manufacturer.
When the noise level at the working place is superior to 85 dB(A), it is recommended to use
auditory protectors.
Tool noise level : see the luggage lable.
Do not use a portable tool in explosive atmosphere.
3. RT PNEUMAT LIMITER FUNCTIONING
The items are the one of the exploded view. The tightening torque on the screwdriver extremity
involves a reaction torque on the collar (56) of the last epicycloid reduction train which lend to
make the collar turn in the contrary sense.
A torsion spring (69) limits the angular bottoming proportionally to the output torque.
A cam system constituted of 3 balls (65) and 3 housings (71) involves the moving of the central
trigger circuit (61). The clack valve rod closes instantaneously and stops the motor by air shut-
off.The came adjusting (71) by blocking screws (79) and adjusting screws (81C) permits to
fluctuate the angular clearance amplitude, acting like this on the tightening final torque.
This type of limiter only works in the tightening sense (or untightening if it has been specified
on the order).
During a contrary rotation, the applied torque is the one corresponding to the tool maximum
capacity. The screwdrivers equipped with the RT limiter are torque control tools with a torque
adjusting system which cuts the tool power feeding as soon as the torque reaches a
preadjusted determined level (paragraph 3.15/NF 5393 ISO).

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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4. STARTING LEVER ORIENTATION WITH REGARD TO THE HEAD
Untighten the nut (54) thanks to a spanner wrench.
Adjust the set plug-motor and retighten with
moderation the blocking nut.
5. TORQUE ADJUSTMENT
Adjustment procedure :
Before any adjustment to the utilization torque, look for the position corresponding to the
minimum torque.
Let the screwdriver turn in free rotation in the tightening sense, and after having untightened
the blocking screw (79), turn the adjusting screw (81) in the negative (anti-clockwise) sense
until the screwdriver stops.
A hard soft point of the maneuver precedes this position.
Release the lever and activate once again the lever :
the screwdriver musn’t start its rotation.
Depending on the screwdriver models (LR3 to
LR7), the variation between the adjustment of
the minimum torque and of the maximum torque
can be made from 5 to 10 turns of the adjusting
screw corresponding to a sensitivity of 5 Nm/turn
to 1 Nm/turn.
The sensitivity of 5 Nm/turn is applied for the LR3 type screwdrivers whereas the sensitivity of
1 Nm/turn corresponds to LR7 type screwdrivers.
Turn the adjusting screw in the positive sense (clockwise) of half turn in half turn and activate
the lever at each face : when the screwdriver starts, the adjusting torque corresponds to the
minimum torque.
Proceed to the control of the torque value by inserting a rotary transducer between the
screwdriver and the tightening socket, in accordance with the procedure described in the 5393
ISO standard. Modify the adjustment until you obtain the desired torque. Make sure you take
up the adjusting screw clearance before tightening again the blocking screw.
We advise you to act on this screw only by successive half-turn, and to make a control after
each adjustment modification.
Do not make any adjustment on a retightening. After each intervention on the adjusting screw
(81), tighten again moderately the blocking screw.
6. ASSEMBLY AND DISASSEMBLY RECOMMENDATIONS
At each disassembly, clean and study carefully all the spare parts before to proceed to the
gears and ball bearings regreasing.
Lubricate lightly the blade housings in the moment of the motor reassembly.
Use only appropriated wrenches. Do not use vice tightening and multiple slip-joint pliers.
Warning :
The presence of a cutting kerf on a nut symbolize a threading on the left. It is recommended to
disassembly frequently the exhaust silencers and to clean them with a spray gun after having
soak them in a degreasing agent solution in order to preserve the original caracteristics of the
tool.
After each complete dismounting, it is necessary to proceed to various assembly controls.
Adjusting screw
Adjusting wrench
2,5 mm male
6 flats wrench
Orientation prohibited to avoid pinches
Swivelling lever on 120°
Blocking screw

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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6.1 Control of the limiter set clearance
Assemble the parts set from the item (45A).
Operate a pression on the visible part of the output spindle (49).
The axial clearance must be from 0,05 to 0,25 mm.
1. The clearance is inferior : check the ball-bearing assembly (64)
on the spindle(66),take off the adjusting block located into the item (78).
2. The clearance is superior : insert blocks within the item (78).
(adjusting block sets including one block of 0,2 mm and one block of 0,3 mm are
available under the reference 23534).
- Checking of the trigger circuit (61) stability
Insert the rod (52) in the set precedently controlled, and check if it moves when modify the
adjustment until the position corresponding to the screwdriver no-restarting ability.
The cam position is at this moment the cutoff (see the torque adjustment procedure).
Then the rod must move of some millimeters.
- Release the pression operated on the item (52).
- The rod revs up.
- Modify the adjustment in the positive sense of some turns.
- The rod must be in limit stop on the trigger circuit (61).
- Operate a moderated pressure on the rod.
- It musn’t subside.
Otherwise : retouch the limiter mounting, control the trigger circuit (61) and the needle
(57) extremity.
6.2 Control of the flap locking
Assemble the parts set constituting the motor and the plug until the item (44).
- Thanks to the rod (52), maintain the flap open.
- Conect the screwdriver to the compressed air network.
- Activate the lever.
- The motor must turn.
- Take off the rod (52).
- The motor stops instantly.
- Check that the motor stops immediatly during a new activation on the lever.
- Repeate various times the operation making sure you force back the rod
before any trial.
Otherwise : -Check the flap and its seat state.
-Check the straightness of the flap rod and that the rod slides well in the rotor.

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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6.3 Control of the flap opening
- Check that the limiter is not in cutoff position.
- Assemble the machine set without tightening the nut (54).
- Connect the screwdriver to the air network.
- Hold the machine on the vertical position, head up.
- Activate the starting lever.
- The limiter part offsets from the motor set of the value of the flap locking opening.
Measure the clearance witch corresponds to the flap opening in normal position.
- Move the rod (52) so that this clearance is included between 1 and 1,5 mm.
An inferior clearance results in a decrease of the tool performances (motor underfed).
A superior clearance increases the torque dispersion.
7. LUBRICATION
Pneumatic tools must be feeded with filtered and lubricated air.
It is recommended to install the lubricator the nearer possible of the tool especially during the
screwdriver utilisation. It is also recommended to watch over to the good functionning and to
the oil supply adapted adjustment.
After a prolonged locking, introduce by the feeding connector some crude drops or clean gas
oil drops.
- Turn the motor in manual by actionning the output spindle.
2
: the limiter raises
and the motor stops
3 : lift up the nut
(item 54)
1 : press on
the lever
Control of the flap opening : mini 1
maxi 1,5
Screwdriver feeded with air

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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RT PNEUMAT LIMITER
Came axial guiance by 3 ball ranges
Anchorage point of the torsion spring
Angular deviation proportional to the torque
REST position
Deviation proportional to the torque
Shut-off locking
After torque is reached
Lever release
Blockage in INTERMEDIARY position

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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EXPLODED VIEW 4 CRT** LR* Co

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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GENERAL PLAN

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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GENERAL PLAN

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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NOMENCLATURE AND RECOMMENDED WEAR SPARE PARTS
Tool designation Column
4 CRT 30 LR3 A
A According to drawing 22962 f1 16.06.92
4 CRT 30 LR4 B
B 22962 f2 16.06.92
C According to exploded view
4 CRT LR* 07.11.01
4
4 C CR RT T 2 25 5 L LR R5 5 D
4
4 C CR RT T 2 25 5 L LR R7 7 E
F Wear spares I
Designation
Partial assembly
composition Reference Nomenclature
Item
Partial
assembly
SPARE PARTS A B C D E F G H I
20A Plug kit * 28053 1 1 1 1
1 Silencer 1 23598
2 Bronze silencer 2 23630
3 Connector 1 23597
9 Flap body 1 23593
12 Spring 1 21491 X
13 O-ring 1 22918
19A Ball tappet 1 23163
15 Retainer ring 1 22918.04 X
16 Maneuver ring 1 22870
17 Pin 1 22325 X
18 Lever 1 23088
19 Pin 1 22877 X
20 Nude plug 1 23602 D
21 Needle 1 22876-19
22 O-ring 1 23595
23 Flap 1 23592 X
24 O-ring 1 15961
25 Flap seat 1 23594
26 * Equipped flap 22866 1 1 1 1
27 Silencer 23596 1 1 1 1
28 O
O- -r ri in ng g ø ø 1 17 7 x x 1 1 22917 2
2 2 2
29 Admision washer 22865 1 1 1 1
31 Counter flange 22863 1 1 1 1
32 Curved washer 22920 2 2 2 2 X
33 Nut 22922 1 1 1 1 X
34 Ball bearing 8 x 19 x 6 14104 1 1 1 1 X
35 Spacer 22945 1 1 1 1 X

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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NOMENCLATURE AND RECOMMENDED WEAR SPARE PARTS (suite)
Designation
Partial assembly
Composition Reference Nomenclature
Item
Partial
assembly
SPARE PARTS A B C D E F G H I
36 Back flange 22862 1 1 1 1
37 Stator 22942 1 1 1 1
38 Rotor 8 teeth mo.5 22836-080 1 X
Rotor 10 teeth mo.5 22836-100 1 X
Rotor 12 teeth mo.5 22836-120 1 X
Rotor 14 teeth mo.5 22836-140 1 X
39 Blade 17405 5 5 5 5 X
40 On pinion 8/18 teeth 21892 1
41 Front flange 22843 1 1 1 1
41A Front counter flange 22940 1 1 1 1
42 B Be ea ar ri in ng g 1 12 2 x x 2 24 4 x x 6 6 21927 1 1 1 1 X
43 Motor body 22849 1 1 1 1
43A Yellow PVC case 234761 1 1 1 1
44 Collar support mo.5 22855 1 1 1 1
45 Nude gear holder 1 18224
Nude gear holder 1 18171
Nude gear holder 1 21614
Nude gear holder 1 22842
46 Gear 19 teeth mo.5 3 18223 X
Gear 18 teeth mo.5 3 18173 X
Gear 17 teeth mo.5 3 18672 X
Gear 15 teeth mo.5 3 21891 X
47 Needle Ø 1 x 9,8 36 36 36 18026 X
Needle Ø 0,8 x 9,8 36 18233 X
48 Avis Ø Ø 3 3 x x 1 16 6, ,8 8 3 3 3 16985
Axis Ø Ø 2 2, ,5 5 x x 1 15 5, ,8 8 3 21903
49 * Gear holder 10/10 * 18221 1
* Gear holder 12/12 * 18170 1
* Gear holder 14/16 * 21615 1
* Gear holder 18/18 * 22924 1
46 Gear 19 teeth mo.5 3 18223 X
Gear 18 teeth mo.5 3 18173 X
Gear 15 teeth mo.5 3 21891 X
Gear 16 teeth mo.5 3 18325 X
47 Needle Ø 0,8 x 9,8 36 36 18233 X
Needle Ø 1 x 9,8 36 36 18026 X

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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NOMENCLATURE AND RECOMMENDED WEAR SPARE PARTS (suite)
Designation
Partial assembly
Composition Reference Nomenclature
Item
Partial
assembly
SPARE PARTS A B C D E F G H I
48 A Ax xi is s Ø 2,5 x 15,8 3 21903
A Ax xi is s Ø 3 x 15,8 3 3 3 12443
50 Nude spindle 1 22816-100
Nude spindle 1 22816-120
Nude spindle 1 22816-160
Nude spindle 1 22816-180
51 * Equipped spindle / 10 teeth * 22923-100 1
* Equipped spindle / 12 teeth * 22923-120 1
* Equipped spindle / 16 teeth * 22923-160 1
* Equipped spindle / 18 teeth * 22923-180 1
52 * Needle Ø 1,5 21758-73 1 1 1 1
53 Collar 22838 1 1 1 1
54 Nut 22833 1 1 1 1
55 Bearing 22812 1 1 1 1
56 (included in 68) 22810
57 Control rod 21717 1 1 1 1
58 Motion finger 21712 1 1 1 1
59 Spring 21759 1 1 1 1
60 Rod guide 22804 1 1 1 1
61 Balancer 22805 1 1 1 1
61A Spring 22913 1 1 1 1
62 Pin Ø 2 x 11,8 17805 1 1 1 1
63 Circlips type 7000 Ø 21 22914 1 1 1 1
64 Bearing 12 x 21 x 5 22495 1 1 1 1
65 Ball Ø 4 13012 4 4 4 4
66 Gear shaft / 30 22806 1 1
Gear shaft / 25 / 10 22831 1 1
67 Bearing 22815 1 1 1 1
68 * Equipped came 22946 1 1 1 1
69 Spring 2,54 lead 22819-254 1 X
Spring 3,66 lead 22819-366 1 X
Spring 5,60 lead 22819-560 1 X
Spring 7,02 lead 22819-702 1 X
70 Ball Ø 2 18319 9 9 9 9 X
71 Came 22809 1 1 1 1 X
72 Circlips : WR 19 22811 1 1 1 1

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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NOMENCLATURE AND RECOMMENDED WEAR SPARE PARTS (suite)
Designation
Partial assembly
Composition Reference Nomenclature
Item
Partial
assembly
SPARE PARTS A B C D E F G H I
73 Washer 22814 1 1 1 1
74 Inner came 22808 1 1 1 1
75 Spring 22825 1 1 1 1
76 (Included in 77)
77 * Adjusting Wheel 22947 1 1 1 1 X
78 Spacer 22821 1 1 1 1
78A Adjusting blocks set 23534 1 1 1 1
79 Blocking screw 22824 1 1 1 1
80 Ring TRUARC 7144 Ø 2,5 22915 1 1 1 1 X
81 Adjusting screw 22823 1 1 1 1 X
82 Carter / head 30 22818 1 1
83 Bearing 15 x 24 x 5 1 21928
84 Spacer 1 21922
85 Needle bush HK 1612 1 20056
86 Sealing washer G 16 x 22 x 3 1 21926
87 Driving pinion 1 21917 X
88 Nude head 30 1 21920
89 Needle bush BK 0709 1 21063
90 Nude bevel wheel 1 21918 X
91 Snug 1 1 21166
92 Spring 1 1 21167
93 * Equipped bevel wheel * 1 21924 X
94 Bearing 12 x 24 x 6 1 21927
95 Screw 1 21921
99 * Complete 30 head * 21925-395 1 1
100 Carter / head 25 / head 10 22832 1 1
101 Bearing 12 x 21 x 5 1 22495
102 Spacer 1 22488
103 Needle bush HK 1412 1 22498
104 O-ring 1 22497
105 Driving pinion 1 22462 X
106 Nude 25 head 1 22487
107 Needle bush BK 0609 1 22496
111 Screw 1 22489
112 Nude bevel wheel 9,52 1 22461 X
113 * Equipped bevel wheel 9,52 * 1 22492
114 Complete 25 head 9,52 * 22714-250 1 1

Pneumatic angle nutrunners PNEUMAT 4 CRT serie / Instructions manual
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WEAR SPARE PARTS LIST
Reference Designation Code
22325 Spirole pin 2000143
22922 Nut 2000162
14104 Bearing 8 x 19 x 6 2000163
22945 Spacer 2000164
22836-080 Rotor 8 teeth 2000165
22836-100 Rotor 10 teeth 2000166
22836-120 Rotor 12 teeth 2000167
22836-140 Rotor 14 teeth 2000168
17405 Blade 2000169
21927 Bearing 12 x 24 x 6 2000170
18223 Gear 19 teeth 2000171
18173 Gear 8 teeth 2000172
18672 Gear 17 teeth 2000173
21891 Gear 15 teeth 2000174
18026 Needles 1 x 9,8 2000153
18325 Gear 16 teeth 2000176
22819-254 2,54 lead spring 2000178
22819-366 3,66 lead spring 2000179
22819-560 5,60 lead spring 2000180
22819-702 7,02 lead spring 2000155
22915 TRUARC ring 2000156
21917 Driving pinion 2000157
21918 Nude bevel wheel 2000100
21924 Equipped bevel wheel 2000159
22462 Driving pinion 2000181
22461 9,52 nude bevel wheel 2000881
21491 Spring 2000193
2291804 Retainer ring 2000872
22823 Adjusting screw 2000243
22877 Pin 2000734
23592 Flap 2000867
22920 Curved washer 2000194
18233 Needle 2000175
18319 Ball ø 2 N.C.
22809 Came 2000202
22947 Adjusting wheel 2000203

Please give us your account number to be better attended to :
06.17.
60056
.07/03