maintenance instructions
Model MCS 300
page 16 of 16
®
JARVIS
6201010:.
PRODUCTS CORPORATION
33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926
UNITED STATES OF AMERICA E--MAIL.
jarvis.products.corp@snet.net
TEL. 860--347--7271 FAX. 860--347--6978 WWW. j
arvisproducts.com
AIR MOTOR
HOUSING
ROTOR
Figure 7
REAR HANDLE
ASSEMBLY
CHEESE HEAD
SCREWS
Notes
1. Tightened cheese head screws evenly in a crisscross pattern.
2. Make sure rotor rotates freely as you tightened screws.
1
2
3
4
CRISSCROSS
PATTERN
11 MOTOR HOUSING ASSEMBLY:
11.1 Reverse procedures and steps outlined in section
6.
See notes below.
11.1.1 Make sure o--ring (items 59) is seated prop-
erly in motor housing.
11.1.2 Install motor housing assembly (items
62--69, 98 and 99) as a complete unit into
motor housing.
For ease of removal and
installation, use a heat gun to apply heat to
motor housing, if necessary.
11.1.3 When installing rear handle assembly,
tighten cheese head screws (item 77) evenly
using a crisscross pattern. Make sure rotor
(item 65) rotates freely as you tighten
cheese head screws.
Refer to Figure 7 as a
guide.
12 HANDLE AND VALVE HOUSING DISASSEM-
BLY:
12.1 Remove cheese head screws (item 77) and lock
washers (item 76).
12.2 Separate the motor housing assembly and rear
handle assembly as a complete unit from inter-
mediate housing assembly.
12.3 Separate the motor housing assembly from rear
handle assembly.
12.4 Remove threaded pin (item 96) from handle and
valve housing (item 74 or 109).
12.5 Remove trigger (item 73 or 108) from handle
and valve housing (item 74 or 109).
12.6 Press bushing (item 72) and dowel pin (item 71)
from trigger (item 73 or 108) if necessary.
For Single Trigger Tools:
12.7 Remove valve plug (item 85), o--ring (item 86)
and compression spring (item 87) from handle
and valve assembly.
12.8 Slide valve plunger assembly (items 88--93)
from handle and valve housing as a complete
unit.
12.9 Unscrew valve screw and spring guide (item 88)
from valve plunger (item 93) and separate
plunger assembly.
12.10 Remove external retaining ring (item 92) and
valve seal (item 91) from seal housing (item 90).
12.11 Remove o--ring (item 89) from valve screw and
spring guide (item 88).
For Dual Trigger Tools:
12.12 Remove threaded plug (item 104) and valve
(item 103) from rear handle and valve assembly.
12.13 Remove locking screws (item 107) and trigger
guard (item 106) from front handle (item 101).
12.14 Remove dowel pin (item 102) and front trigger
lever (item 105).
12.15 Remove threaded plug (item 104) and valve
(item 103) from front handle and valve assem-
bly.
For All Tools:
12.16 Remove o--rings (items 70 and 97).
12.17 Clean and inspect all parts for wear and replace
as necessary.
13 HANDLE AND VALVE HOUSING ASSEMBLY:
13.1 Reverse procedures and steps outlined in section
8.
See notes below.
13.1.1 Make sure o--rings (items 59, 70, 86 and 97)
are seated properly.
13.1.2 Make sure valve plunger (item 93) slides
freely through bushings (item 94).
Note:
Bushings are press fitted into handle and
valve housing and usually do not need to be
removed.
13.1.3 When installing rear handle assembly,
tighten cheese head screws (item 77) evenly
using a crisscross pattern. Make sure rotor
(item 65) rotates freely as you tighten
cheese head screws.
Refer to Figure 7 as a
guide.
