maintenance instructions
Model SEC 400
page 23 of 24
JARVIS
PRODUCTS CORPORATION
33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926
UNITED STATES OF AMERICA E--MAIL.
TEL. 860--347--7271 FAX. 860--347--6978 WWW.
jarvisproducts.com
6204004;.
®
7.2 Remove socket head screws (item 52, Figure A,
page 4) and separate front handle assembly from
intermediate housing (item 35).
7.3 Remove hex head screws (item 47).
7.4 Remove blade guard (item 46) and guard gasket
(item 45).
7.5 Remove hex head screws (item 33) and split
lock washers (item 34). Remove gear housing
(item 24) and intermediate housing (item 35) to-
gether as one unit, from motor.
7.6 Remove socket head screws (item 23) and gear
box cover (item 4).
7.7 Remove hex nut (item 27),
left hand thread.
7.7.1 Hold short stud (item 10) from moving with
6 mm allen wrench while unscrewing hex
nut (item 27),
left hand thread
.
Use heat to
loosen hex if necessary.
7.8 Remove gear and blade shaft (item 9) and gear
bearing assembly (items 10--15), together as one
unit, from gear housing (item 24).
7.9 Unscrew bearing clamp (item 15,
left hand
thread)
and pull short stud, bearing cones,
spacer, shims and bearing cups (items 10 -- 14)
as one unit out from gear and blade shaft (item
9).
7.10 Disassemble the gear bearing assembly.
7.10.1 Remove short stud (item 10) to separate
bearing cones (item 11) and bearing cups
(item 12).
7.11 Remove hex nut (item 28
).
7.11.1 Hold long stud (item 16) from moving with
6 mm allen wrench while unscrewing hex
nut (item 28).
Use heat to loosen hex if nec-
essary,
7.12 Slide bevel and spur gear assembly (items 11,
12, 14 and 16 -- 21) out of gear housing (item 24).
Be careful not to lose or damage shims (item 14).
7.13 Disassemble the bevel and spur gear bearing as-
sembly.
7.13.1 Remove long stud (item 16) and separate
gear assembly.
7.13.1.1 Press bearing cups (item 12) with an ar-
bor press and
Jarvis
special tool, part
number 8039165 from bevel gear (item
21).
7.13.2 Remove external retaining ring (item 18)
and slide off spur gear (item 20) from bevel
gear (item 21).
7.14 Remove splined coupling (item 47, Figure A,
page 4) and o--ring (item 48, Figure A, page 4).
7.15 Remove socket head screws (item 44) and thrust
ring (item 43).
7.16 Remove pinion shaft assembly (items 37 -- 41)
out from the “motor end” of intermediate hous-
ing (item 35) and disassemble.
7.16.1 Remove external retaining ring (item 40)
and press ball bearing (item 41) from shaft
of pinion gear (item 37).
7.16.2 To remove inner ring bushing (item 38)
from pinion gear shaft (item 37), use
Jarvis
special tool, part number 8039102.
7.17 Remove screws (item 32) and washers (item 31)
and separate gear housing (item 24) from inter-
mediate housing (item 35).
7.18 Press out needle bearing (item 29) from inter-
mediate housing (item 35) using
Jarvis
special
tool, part number 8039166.
7.19 Inspect all parts for wear and replace if neces-
sary.
8 THIN HEAD GEAR HOUSING ASSEMBLY:
Refer to Figure E on page 8 as a guide.
8.1 Reverse steps and procedures outlined in section
7.
See special notes below.
8.1.1 Install inner ring bushing (item 38) using
Jarvis
special tool, part number 8039102.
8.1.2 If replacing tapered bearing cones and cups
(items 11 and 12), proper clearance between
them must be set with spacers (items 13 and
17) and shims (item 14).
Note:
Shim pack-
age (item 14) contains 3 shims 0.005 inch
thick and 6 shims 0.002 inch thick. Install
only as many shims as necessary to achieve
proper clearance.
8.1.2.1 When assembled, there should be a
slight resistance to the rotation of the
gear and blade shaft (item 9). A slight
clearance between the bearing cone and
bearing cup is acceptable as long as the
gear assembly is stable with no side to
side play on the stud.
8.1.2.2 If bearing cones are tight (with not
enough clearance between bearing con-
es and bearing cups), add shims until
proper clearance is achieved. Replace
spacer if necessary.
8.1.2.3 If bearing cups are loose (with too much
clearance between bearing cones and
bearing cups), remove shims until prop-
er clearance is achieved.
