Craftsman 875.199800 Owner's Manual page 5

Owner's Manual Model No. 875.199800 Owner's Manual Model No. 875.199800
Lubrication
An in-line filter-regulator-lubricator (fig 1)
is recommended as it increases tool life
and keeps the tool in sustained operation.
The in-line lubricator should be regularly
checked and filled with air tool oil. Proper
adjustment of the in-line lubricator is
performed by placing a sheet of paper
next to the tools exhaust ports and holding
the throttle open approximately 30
seconds. The lubricator is properly set
when a light stain of oil collects on the
paper.
Excessive amounts of oil should be
avoided. In the event that it becomes
necessary to store the tool for an
extended period of time (overnight,
weekend, etc.), it should receive a
generous amount of lubrication through
the air inlet (Figure 3). The tool should be
run for approximately 30 seconds to
ensure oil has been evenly distributed
throughout the tool. The tool should be
stored in a clean and dry environment.
Recommended Lubricants
Use air tool oil or any other high grade
turbine oil containing moisture absorbent,
rust inhibitors, metal wetting agents and
an EP (extreme pressure) additive. See
Figure 3 for location/air inlet.
IMPACT MECHANISM LUBRICATION
The impact mechanism transfers power
from the tool to a nut or bolt. Oil in the
mechanism is forced out and must be
replaced. Lubricate the impact
mechanism one time a year; more
often if a tool is used more than ten
hours a week.
To lubricate and clean the impact
mechanism and the front bearing:
1. Disconnect the impact wrench from
the air supply.
2. Remove the slotted screw or Allen
head screw from the oil port hole (Ref. #41)
(Refer to figure 3).
3. Squeeze approximately 1 oz. of 30 weight oil
through the oil port hole. Replace the screw.
4. Reconnect the air supply to the impact
wrench and run for 20 to 30 seconds.
Lubricate the entire impact mechanism
by rotating the tool upside down
and sideways while running the tool.
5. Remove the screw and hold the oil
port hole over a suitable container to
allow excess oil to drain. Sometimes
triggering the tool when dumping the oils
helps to force out the excess oil.
6. If the oil is dirty, repeat the procedureabove
until the oil comes out clear. Install the screw
and tighten. The residual oil remaining in the
impact mechanism chamber is all that is
needed for proper lubrication.
Lubricate air motor here
Figure 3
Exploded View Drawing
44
Parts List
Ref. Part#
1 9106257
2 9106258
3 9106259
4 9150070
5 9106261
6 9106262
7 9106263
8 9106264
9 9106265
10 9106266
11 9106267
12 9106268
13 956313
14 956314
15 9106269
16 9106270
17 9106271
18 9106272
19 9106273
20 9106274
21 9106275
22 9106276
Description
Housing
Anvil Bushing
Socket Retainer
O-Ring
Anvil
Hammer Cage
Hammer Dog
Hammer Pin
Washer
Ball Bearing 1
Front End Plate 1
Plug 2
Cylinder 1
Rotor 1
Dowel Pin 1
Rotor Blade 6
Rear End Plate 1
Ball Bearing 1
Ornamental Gasket 1
Gasket 1
End Cap 1
Valve Stem 2
Qty.
1
1
1
1
1
1
1
2
1
Ref. Part# Description Qty.
23 9106277 O-Ring 2
24 9106278 Valve Seat 2
25 9106279 Valve Spring 2
26 9106280 Screw 1
27 9106281 Reverse Switch 1
28 9106282 O-Ring 1
29 9106283 Air Regulator 1
30 9106284 O-Ring 1
31 9106285 Valve Sleeve 1
32 9106286 Pin 1
33 9106287 O-Ring 2
34 9106288 O-Ring 1
35 9106289 Spring 1
36 9106290 Steel Ball 1
37 9106291 Air Inlet Block 1
38 9106292 Cap Screw 4
39 9106293 Protective Nose Cover 1
40 9106294 Seal 1
41 9106295 Screw 1
42 9106296 Throttle Lever Pin 2
43 9106297 Throttle Lever 1
44 9106298 Washer 1
ENG-8 ENG-9