Specifications

maintenance instructions
Model SEC 400
page 22 of 24
JARVIS
PRODUCTS CORPORATION
33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926
UNITED STATES OF AMERICA E--MAIL.
[e-mail]
TEL. [phone] FAX. [phone] WWW. jarvisproducts.com
6204004;.
®
Figure 3
Blade Installation
(Thin Head only)
Blade
Blade Clamp
Dowel Pin
Hole for
Dowel Pin
Gear and
Blade Shaft
Lip
Hole for Dowel Pin
Hex Nut
5 GEAR HOUSING DISASSEMBLY:
For thin head gear housing disassembly, see section 7.
5.1 Remove circular blade. Follow steps and proce-
dures outlined in section 3.
5.2 Remove socket head screws (item 52) and sepa-
rate front handle assembly from gear housing.
5.3 Remove hex h ead screws (item 56).
5.4 Remove blade guard (item 55) and guard gasket
(item 51).
5.5 Remove hex head screws (item 34) and split
lock washers (item 35). Separate gear housing
from motor.
5.6 Remove socket head screws (item 46) and thrust
ring (item 45).
5.7 Remove splined coupling (item 47) and o--ring
(item 48).
5.8 Remove pinion shaft assembly (items 38 and
40--44) out of the “motor end” of gear housing
(item 17) and disassemble.
5.8.1 To remove inner ring bushing (item 40)
from p inion shaft (item 38), use Jarvis spe-
cial tool, part number 8039102.
5.9 Remove o--ring (item 36).
5.10 Remove socket head screws (item 7).
5.11 Remove gear assembly (items 4--6 and 8--15).
5.11.1 Lightly tap on gear housing (item 17) with
a nylon mallet while pulling on gear box
cover (item 9).
5.12 Remove cylindrical bearing (item 16) from gear
housing (item 17).
5.12.1 Heat gear housing (item 17) to 200°F. Use
Jarvis special tool, p art number 8039101,
to lift bearing out of gear housing. Discard
bearing -- do not
re--use.
5.13 Remove needle bearing (item 37) from gear
housing (item 17).
5.13.1 Heat gear housing (item 17) to 200°F. Use
Jarvis special tool, p art number 8039080,
to pull needle bearing (item 37) out of “mo-
tor end” of gear housing (item 17). Discard
bearing -- do not
re--use.
5.14 Disassemble gear assembly (items 4--6 and
8--15).
5.14.1 Remove retaining ring (item 15).
5.14.2 Remove both spiral bevel gear (item 14)
and ball bearing (item 13) from blade
mounting shaft (item 6 ). Use a common
gear puller or Jarvis special tool, part num-
ber 8039096, to remove spiral bevel gear.
The spiral bevel gear is threaded to allow
screws to connect gear to puller.
5.14.3 Remove bearing plate (item 12), shaft seal
(item 11), o--ring (item 10) and gear box
cover (item 9).
5.14.4 Remove dowel pins (item 4) and keys (item
5) from blade mounting shaft (item 6).
5.15 Inspect all parts for wear and replace if neces-
sary.
6 GEAR HOUSING ASSEMBLY:
For thin head gear housing assembly, see section 8.
6.1 Reverse steps and procedures outlined in section
5. See special notes below:
6.1.1 Cylindrical bearing (item 16) should b e
installed using Jarvis special tool, part
number 8039071. It is recommended that
gear housing (item 17) be preheated to
200°F to ease installation.
6.1.2 Needle bearing (item 37) should be installed
from “motor end” of gear housing (item 17)
using Jarvis special tool, part number
8039074. It is recommended that gear hous-
ing (item 17) be preheated to 200°F to ease
installation.
6.1.3 Install inner ring bushing (item 40) using
Jarvis special tool, part number 8039102.
6.1.4 Pack bearings with Jarvis 1315 White
Grease prior to placing gear shaft assembly
(items 4 -- 15) into gear housing (item 17 ).
7 THIN HEAD GEAR HOUSING DISASSEMBLY:
Refer to Figure D on page 7 for referenced items unless
otherwise noted. Refer to Figure E on page 8 a s a proce-
dural guide.
7.1 Remove circular blade. Follow steps and proce-
dures for thin head blade removal outlined in
section 3.