CRYSTEEL LO-BOY, Manual

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1644526G (406807) 2020-SEP-21 4 1644526G (406807) 2020-SEP-21 5
TABLE OF CONTENTS
FOREWORD 2
SOME DO’S AND DON’TS FOR SAFE AND LONG SERVICE
3
OPERATION AND USE 3
LOCATE AND INSTALL REAR HINGE 6
LOCATE HOIST 7
MOUNT HOIST FRAME 8
HYDRAULIC SYSTEMS 8
INSTALL GEAR PUMP - BERT, CHARLIE & DANIEL 8
INSTALL GEAR PUMP - DAVID, ERNIE & FLOYD 9
MOUNT RESERVOIR/VALVE ASSEMBLY - BERT, CHARLIE & DANIEL 9
MOUNT RESERVOIR/VALVE ASSEMBLY - DAVID, ERNIE & FLOYD 10
INSTALL HOIST CONTROL 11
INSTALL HOSES - BERT, CHARLIE & DANIEL 12
INSTALL HOSES - DAVID, ERNIE & FLOYD 13
ADD HYDRAULIC FLUID 14
ELECTRIC POWER UNIT MOUNTING - GENERAL 15
INSTALL HOSES - SINGLE-ACTING 16
INSTALL HOSES - DOUBLE-ACTING 17
ELECTRIC DOUBLE-ACTING 17
ADD HYDRAULIC FLUID 18
MOUNT BODY 19
INSTALL BODY GUIDE PLATES 19
INSTALL BODY PROP 20
INSTALL GREASE ZERKS AND LUBRICATE 21
MOUNT DECALS 22
HOIST PARTS - BERT, CHARLIE, DANIEL, DAVID, ERNIE & FLOYD 23
CYLINDER PARTS 25
HYDRAULIC SYSTEM PARTS - BERT, CHARLIE, DANIEL 26
HYDRAULIC SYSTEM PARTS - DAVID, ERNIE, FLOYD 29
CAPACITY FORMULA 32
SPECIFICATIONS 32
INSTALLATION INSTRUCTIONS
GENERAL INFORMATION
It is a good idea to look through these installation instructions before beginning to mount the hoist and
hydraulic system.
When welding, protect the truck’s electrical, air and brake systems by disconnecting, removing or cover-
ing. Tighten all nuts and bolts to a consistent level. Use the following table for torque values.
Size Grade 2 Torque Grade 5 Torque Grade 8 Torque
1/4-20 3-4 lb-ft 6-7 lb-ft 10-11 lb-ft
1/4-28 4-5 lb-ft 8-9 lb-ft 11-12 lb-ft
5/16-18 8-9 lb-ft 14-15 lb-ft 21-22 lb-ft
5/16-24 9-10 lb-ft 15-16 lb-ft 21-22 lb-ft
3/8-16 17-18 lb-ft 24-26 lb-ft 37-40 lb-ft
3/8-24 19-20 lb-ft 28-30 lb-ft 40-43 lb-ft
1/2-13 38-42 lb-ft 60-65 lb-ft 90-100 lb-ft
1/2-20 43-47 lb-ft 70-75 lb-ft 95-105 lb-ft
5/8-11 75-80 lb-ft 122-130 lb-ft 180-190 lb-ft
5/8-18 85-90 lb-ft 145-150 lb-ft 200-210 lb-ft
3/4-10 132-140 lb-ft 220-230 lb-ft 315-330 lb-ft
3/4-16 152-160 lb-ft 250-260 lb-ft 355-370 lb-ft
The following abbreviations are used in describing hydraulic fittings.
ORBM O-Ring Boss - Male Thread
NPTM Pipe - Male Thread
NPTF Pipe - Female Thread
JICM JIC 37° - Male Thread
JICF JIC 37° - Female Thread