Joyce RWB3250 User Manual
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to one side to make connection with your structure. Fully extend the jack to make sure the
load is aligned with the lifting screw.
8. All jacks are designed to be mounted with S.A.E. Grade 8 bolts or equivalent.
9. Torque all mounting bolts in a symmetric pattern to avoid damage to the sleeve.
10. Shaft and coupling guards are the responsibility of the user.
11. Optional limit switches furnished with the jacks are NOT preset and require field adjustment
before use.
Section II
Maintenance
2-1 Lubrication
1. Jacks are lubricated before leaving the factory.
2. For normal operation, jacks should be greased at least once per month. Under extended
use, grease twice monthly or as conditions dictate. Grease thru the fitting on the jack with
hand or power operated equipment. Usually one-quarter ounce, (about 8 pumps of a hand
grease gun) is sufficient. Grease with No. 1 Consistency EP Grease. Do not allow jacks to
operate un-lubricated. It is the responsibility of the user to maintain sufficient lubrication of
the jack.
3. The products listed below are recommended by the lubricant manufacturers to meet the
requirements for normal operation. The listing of brand names is solely for the
convenience of users of Joyce equipment and their lubricant suppliers; it does not
constitute any endorsement. Joyce/Dayton assumes no responsibilities for the quality,
performance or availability of any listed products
COMPANY
BRAND NAME
Mobilgrease................................... XHP 461
Mobilgrease................................... XHP 221
Mobilith........................................... SHC 221
Mobilith........................................... SHC 460
4. For operation above 250° F or extreme loading, c onsult the Engineering Department of
Joyce/Dayton Corp.
5. Ball screw and ball nut (KFTN models only) should be lubricated with a spindle or 10-
weight oil applied to the ball screw.
6. Do not operate jack or ball screw without lubrication.
7. Total grease capacity of gear box by jack type:
Jack Capacity
Shots
Weight
Jack
Capacity
Shots
Weight
1 ton
5
1.8 oz.
20 ton
95
33 oz.
2 ton
13
4.5 oz
30 ton
135
47 oz.
5 ton
26
9 oz
50 ton
230
81 oz.
10 ton
50
17 oz
2-2 Repair Parts
Repair parts may be obtained by calling Joyce/Dayton Customer Service at (800) 523-5204,
(937) 294-6261, (937) 297-7173 (facsimile), or your local sales representative. When ordering
repair parts, please supply the serial number (located on the jack nameplate).
1. The following parts are recommended for repair or rebuild. Exploded View Section 3-1, 3-2.
A. (2) Worm shaft bearing and race – Item 3
B. (1) Shim kit – Assortment of items 4, 5, 6
C. (2) Worm shaft seal – Item 9 (2-ton and above)