Jarvis 425-16, Operation Instructions Manual, Page: 16 / 16

Model 425--16
page 16 of 16
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.
jarvisproducts.com
JARVIS
6225030::.
®
5.7.1 The dowel pin must be pushed out from the
smaller hole in the clevis housing through
the larger hole in the clevis housing.
5.8 Remove both links (item 45).
5.9 Clean and inspect all parts for wear and replace
as necessary.
6 LINK ASSEMBLY:
6.1 Reverse steps and procedures outlined in
section 5. See notes below.
6.1.1 Apply
Jarvis
1 315 White Grease to dowel
pin (item 49) and sliding surfaces of links
(item 45) before inserting into clevis
housing (item 51).
6.1.2 Use a pin punch through the small hole in
the clevis housing (item 51) to align the
yoke (item 48) and links (item 45) as you
press dowel pin (item 49) in place. The
dowel pin should end up approximately
flush with top of yoke.
6.1.3 Lock clevis housing (item 51) and cylinder
(item 18) in place with locking ring (item
24). Tighten with
Jarvis
wrench, part
number 8039092.
6.1.4 Follow steps and procedures outlined in
section 4 for blade assembly.
7 CYLINDER DISASSEMBLY:
7.1 Remove blades (item 44). Refer to section 3 as
a procedural guide.
7.2 Remove links (item 45).
Refer to section 5 as a
procedural guide.
7.3 For 425--16 model 4025072, remove rear handle
assembly.
7.3.1 Remove hex head screw (item 15) to
separate from rear handle bracket (item 17).
7.3.2 Remove hex head screws (item 16) to
detach handle bracket (item 17) from
cylinder body (item 18).
7.4 Remove piston rod (item 23) from yoke (item
48).
7.5 Remove piston seals (item 22) off piston rod
(item 23). Use a screw driver to pry off seals if
necessary.
7.6 Remove retaining rings (item 25) inside clevis
housing (item 51) and push out bushing (item
26) from front end of clevis housing (item 51).
7.7 Remove seals (items 27 and 28) from bushing
(item 26).
7.8 Remove o--ring (item 21) from cylinder (item
18).
7.9 Clean and inspect all parts for wear and replace
as necessary.
8 CYLINDER ASSEMBLY:
8.1 Reverse steps and procedures outlined in
section 7.
See notes below.
8.1.1 Install seal and backup ring (item 22) as
shown in Figure 3, below.
Figure 3
Seal Installation
Rod Side
of Piston
Piston Seal
with O--ring
Backup Ring
8.1.2 Screw cylinder assembly onto clevis
housing (item 51) as far as possible, then
back off slightly to obtain desired alignment
of hydraulic fittings (items 19) relative to
cutting plane of blades (item 44).
8.1.3 Lock cylinder assembly in place with
locking ring (item 24). Tighten with
Jarvis
wrench, part number 8039092.
8.1.4 Use Loctite 262 or 271 on threads of piston
(item 23) prior to installing yoke (item 48).
8.1.5 Follow steps and procedures outlined in
sections 4 and 5 for blade and link assembly.
maintenance instructions