maintenance instructions
Model NBS--1
page 29 of 32
6
JARVIS
6207019:
®
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
1 DAILY:
1.1 Remove sawdust from buckets installed on floor
grate (item 55, figure E, page 8).
Refer to figure
A.
Do not allow saw dust to cover carriage drive
mechanism
.
1.2 Make sure that the dual anti-tie down start buttons
are working correctly. Depress each START but-
ton separately and the machine should not start.
Depress one START button, then pause one se-
cond and depress the other START button and the
machine should not start. Repeat this procedure
reversing the START buttons. Depress both
START buttons simultaneously (within one half
second of each other) and the machine should
start. With the machine running, release one
START button and the machine should stop. Con-
tinue holding the depressed START button and
then depress the other START button. The ma-
chine should not start. Repeat this procedure
holding the other START button.
If the machine
malfunctions, repair or remove it from service im-
mediately.
1.3 Make sure that all guards are in good condition
and are installed on the machine.
2 WEEKLY:
2.1 Add USDA approved
Jarvis
1315 White Grease
(part number 1062003) to saw gearboxes and pil-
low block bearings (item 34, figure D, page 7).
Note: Only one pump of grease from a manually oper-
ated grease gun is required for bearing lubrication. Ex-
cessive grease may damage pillow block bearings.
2.2 Check roller chain (item 27, figure D, page 7) ten-
sion. Chain should have all slop removed, but not
be tight or binding.
Excessive slop will cause
chain link and pin wear. Excessive tightness will
cause pillow block bearing wear. Refer to figure
11, page 30 for chain adjustment procedure.
2.3 Brush food grade oil on chain.
Note: Do not attempt to add lubricant to the drive mech-
anism’s gear reducer. Gear reducer is filled with oil at
factory and sealed for life. If servicing is required, return
unit to
Jarvis
.
2.4 Squirt food grade oil on lead screw of slide assem-
blies.
3 BLADE DISASSEMBLY:
3.1 Turn off power to NBS--1.
3.2 Ensure carriage assembly is stationary and lo-
cated at either right side guard or left side guard
(items 6 or 40, figure E, page 8).
3.3 Remove hex head screw (item 26, figure F, page
9).
Insert an allen wrench or screwdriver (item 27
is provided) through one of the outer blade holes
to prevent blade from turning. Jarvis tool, part
number 8039174 (item 1, figure F, page 9) is pro-
vided
.
3.4 Remove blade clamp (item 25, figure F, page 9)
3.5 Remove blade(s) (item 24, figure F, page 9). Re-
place if necessary.
4 BLADE INSTALLATION:
4.1 Reverse steps and procedures outlined in section
3.
See special note below:
4.1.1 If replacement blade(s) has a different diame-
ter than than previous blade, the blade tip must
be aligned with blade setting instrument (part
number 3025018).
Refer to Preliminary Ad-
justments, Step 7, page 27
.
5 GEARBOX DISASSEMBLY: SAWS
Refer to figure F, page 9 for all referenced items unless
otherwise noted.
5.1 Turn off power to NBS--1.
5.2 Unplug saw motors at quick connection couplings
(items 27 and 28, figure K, page 13).
5.3 Remove blade(s) (item 24).
Refer to Section 3.
5.4 Unplug waterline (item 1, figure L, page 13) at
water manifold (item 5, figure L, page 13).
5.5 Remove screws (item 9, figure L, page 13) that
fasten blade guard (item 11, figure L, page 13) to
saw motor gearbox.
5.6 Remove screws (item 2) and square washer (item
3) that fasten pivot shaft (item 4) to pivot base
(item 3 , figure I, page 11).
5.7 Slide saw motor(s), pivot shaft and saw motor
gearbox out from pivot base as one unit.
5.8 Remove motor mounting screws (item 5) and sep-
arate hydraulic motor (item 40) from gearbox as-
sembly.
5.9 Remove screws (item 28) and pull driver gear
(item 29) from motor shaft.
5.10 Slide taper lock hub (item 30) from motor shaft.
Square key (item 32) is pinned to hub.
5.11 Remove screws (item 20) that fasten bearing cov-
er (item 19) to gearbox.
5.12 Remove blade shaft assembly (item 22).
