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Gradall LOED 534A Service Manual

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LOED MATERIAL HANDLER
Gradall is a registered trademark for hudraulic
excavators built by The Gradall Co.
®
MODEL 534A
Service Manual
PART NO. 9020-5896
This manual describes the LOED Handler as origionally
designed and built by the LOED Corporation. The LOED
Handler product line was purchased October 15, 1982 by
The Warner & Swasey Co., a subsidiary of The Bendix
Corporation. Descriptions and specifications shown herein
are subject to change without notice.
IMPORTANT
READ AND UNDERSTAND THIS MANUAL
BEFORE
STARTING,
PERFORMING MAINTENANCE PROCEDURES
ON THIS MACHINE.
KEEP THESE MANUAL IN CAB
OPERATING
OR
THE
COMPANY
406 MILL AVENUE S.W.
NEW PHILADELPHIA, OHIO 44663
(216) 339-2211

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Summary of Contents for Gradall LOED 534A

  • Page 1 READ AND UNDERSTAND THIS MANUAL BEFORE STARTING, OPERATING PERFORMING MAINTENANCE PROCEDURES ON THIS MACHINE. KEEP THESE MANUAL IN CAB COMPANY 406 MILL AVENUE S.W. NEW PHILADELPHIA, OHIO 44663 Gradall is a registered trademark for hudraulic (216) 339-2211 excavators built by The Gradall Co.

  • Page 2: Table Of Contents

    CONTENTS Service/replacement parts ............. Capacity .
  • Page 3 Safe operation depends on reliable equipment and proper operating procedures. Performing the checks and services described in this manual will help to keep your Gradall Handler in reliable condition and use of the recommended operating procedures can help you avoid accidents. Because some procedures may be new to even the experienced operator we recommend that this manual be read, understood and followed by all who operate the unit.

  • Page 4: Service/Replacement Parts

    SERVICE Yo u r L O E D H a n d l e r d i s t r i b u t o r i s p r o p e r l y e q u i p p e d t o s e r v i c e y o u r L O E D H a n d l e r. R e p a i r s s h o u l d b e m a d e b y t r a i n e d a n d q u a l i f i e d s e r v i c e p e r s o n n e l o n l y.

  • Page 5: Capacity

    MODEL 534 6,000# Capacity FIGURE 1...

  • Page 6: Nomenclature

    NOMENCLATURE FIGURE 2 FORKS COMPENSATING CYLINDER FORK FRAME HYDRAULIC RESERVOIR BOOM HEAD FUEL TANK TILT CYLINDER PLANETARY HUB THREE SECTION BOOM CROWD CYLINDER LIFT CYLINDER LEVEL CYLINDER...

  • Page 7: Retraction Chain Replacement

    RETRACTION CHAIN REPLACEMENT DISSASSEMBLY Retract boom completely. Remove rear boom cover. Remove extension (large) chain adjusting nut and jam nut. Remove hose retainer nuts and jam nuts. Disconnect hoses. Remove bolts holding hose guide pan to front of strongback. Remove strongback. Unpin retraction (small) chain from chain ears at back of third s e c t i o n .
  • Page 8 FIGURE 3 Guide Pan Take-up Beam Strongback Take-up Beam Bracket Hose Retainer Nuts Section Three Extension Chain Nuts Retraction Chain Section One Section Three Chain Ears Section Two Extension Chain...

  • Page 9: Extension Chain Replacement

    EXTENSION CHAIN REPLACEMENT DISSASSEMBLY Retract boom completely. Remove rear boom cover. Remove extension (large) chain adjusting and jam nuts. Remove hose retainer and jam nuts. Disconnect hoses. Remove bolts holding hose guide pan to front of strongback. Remove strongback. Unpin retraction (small) chain from chain ears at back of third section. Allow chain to lie on bottom of 1st section.
  • Page 10 FIGURE 4 Guide Pan Retraction Chain Strongback Retraction Chain Ears - Section 1 Hose Retainer Nuts Section Three Extension Chain Nuts Retraction Chain Ears - Section 3 Section One...

  • Page 11: Boom Hose Replacement

    BOOM HOSE REPLACEMENT IF HOSE IS INTACT Remove rear boom cover. Disconnect hose retainer and remove tensioning spring. Connect new hose to old hose with short length of steel wire. Disconnect old hose at back of section three. Carefully pull new hose along guide pan and around reel while pulling old hose out back of boom.

  • Page 12: Shift Control Adjustment

    SHIFT CONTROL LINKAGE ADJUSTMENT P u t s h i f t c o n t r o l i n 1 s t g e a r . A d j u s t v a l v e l i n k a g e ( A ) s o m i c r o s w i t c h ( B ) i s a c t u a t e d w i t h s p o o l p u l l e d d o w n t o s t o p .

  • Page 13: Brake Adjustment

    BRAKE ADJUSTMENT SERVICE BRAKE N o t e : P r i o r t o a n y b r a k e a d j u s t m e n t t h e f o r w a r d - r e v e r s e l i n k a g e m u s t b e a d j u s t e d a s f o l l o w s : W i t h t h e f o r w a r d - r e v e r s e l e v e r i n n e u t r a l , a d j u s t l i n k a g e r o d “...
  • Page 14 TIRE and RIM SERVICING SAFETY IMPORTANT For safety’s sake, always remove the valve core and exhaust all air from a single tire and from both tires of a dual assembly prior to removing any rim components, or any wheel components, such as nuts and rim clamps.
  • Page 15 Mixing parts of one type rim with those of the improper fit. Look for distortion or to another potentially dangerous. Always components that properly locked check chart manufacturer or seated. a p p r o v a l . Block the tire and wheel on the opposite Don’t reinflate a tire that has been run flat side vehicle...
  • Page 16 TWO-PIECE RIMS Correct Incorrect FIGURE 9 FIGURE 7 The components in a correctly assembled and locked An incorrectly assembled two-piece rim could have a large two-piece rim fit snugly. gap in side ring. Components are not firmly locked in place. DO NOT INFLATE TIRE AND RIM ASSEMBLY UNTIL COMPONENTS ARE PROPERLY SEATED AND LOCKED.
  • Page 17 Replace Worn, Rusted & Corroded Replace Distorted Rims & Rim Parts Components Badly worn, rusted and corroded rims and components are Distorted rims and components will not properly lock dangerous and should be replaced with new together. They should be replaced. parts.
  • Page 18 WARNING! MISMATCHED RIM PARTS ARE DANGEROUS AND COULD CAUSE SEVERE INJURY Most highway rims look alike, but all vary somewhat in are present, frequently difficult to see. The rim certain design features. It is these differences between cross-sections below show correct, safe matchings of rim rims of different types that makes “part-mixing”...
  • Page 19 PARKING BRAKE FUNCTION The Parking Brake is spring loaded to apply the brake. Hydraulic pressure is used to release or hold “off” the brake. DISSASSEMBLY PROCEDURE L o o s e n 2 b o l t s ( 2 2 ) a l t e r n a t e l y. S e p a r a t e p o w e r p l a t e ( 1 8 ) a s s e m b l y f r o m t h e r e m a i n d e r o f t h e b r a k e .
  • Page 20 FIGURE 19...

  • Page 21: Power Master Cylinder Repair

    POWER BRAKE MASTER CYLINDER REPAIR FIGURE 20 1.0 REMOVING BRAKE VALVE FROM VEHICLE AND SEPARATlNG CYLINDER RESERVOIR SECTION FROM POWER ASSIST SECTION. Refer Figures 20 & 21. 1.1 Remove Brake Valve from vehicle by dis- connecting necessary fluid lines, dis- connecting push rod,...
  • Page 22 CYLINDER RESERVOIR SECTION D I S A S S E M B LY O F C Y L I N D E R R E S E RV O I R S E C T I O N . R e f e r t o F i g u r e s 1 & 3 . 2 .
  • Page 23 POWER ASSIST SECTION DISASSEMBLY OF POWER ASSIST SECTION. Refer to Figures 20 & 23. 4 . 0 D r a i n f l u i d f r o m u n i t b e f o r e d i s a s s e m b l i n g . 4 .
  • Page 24 AS S E M B LY O F P O W E R A S S I S T S E C T I O N . U s e o n l y h y d r a u l i c o i l i n P o w e r A s s i s t S e c t i o n . 5 .
  • Page 25 PLANETARY HUBS ASSEMBLY PROCEDURE FOR MAJOR ASSEMBLY Start with hub-spindle sub-assembly (1) with large open end up. Assemble internal gear (2) onto the spindle of hub-spindle sub-assembly (1). Place thrust washer (15) onto the spindle pilot of hub-spindle sub-assembly (1). Place thrust bearing (16) onto spindle pilot of hub-spindle sub-assembly (1).
  • Page 26 S e c u r e c o v e r s u b - a s s e m b l y ( 6 ) a n d r i n g g e a r ( 4 ) i n p l a c e w i t h b o l t s . U s e f o u r s h o u l d e r b o l t s ( 1 8 ) f o r c o u n t e r b o r e d h o l e s i n h u b o f h u b - s p i n d l e s u b - a s s e m b l y ( 1 ) a n d u s e b o l t s ( 1 7 ) f o r r e m a i n i n g h o l e s .
  • Page 27 Pl a c e t h r u s t w a s h e r s ( 3 B ) i n s i d e c a r r i e r ( 3 A ) w i t h g r e a s e d s i d e a g a i n s t c a r r i e r ( 3 A ) a n d t h e t a n g s h o u l d b e i n c u t a w a y s e c t i o n o f c a r r i e r ( 3 A ) .
  • Page 28 FRONT: 24 TO 1 FIGURE 24 REAR: 35 TO 1 CARRIER SUBASSEMBLY...
  • Page 29 HYDRAULIC PRESSURE CHECKS N O T E : D o n o t a t t e m p t t o a d j u s t t h e h y d r a u l i c p r e s s u r e s e t t i n g s o n t h i s m a c h i n e .
  • Page 30 HYDRAULIC CYLINDERS N O T E : R e p l a c e a l l s e a l s w h e n e v e r a c y l i n d e r i s d i s s a s s e m b l e d f o r r e p a i r. DISSASSEMBLY R e m o v e c y l i n d e r f r o m m a c h i n e .
  • Page 31 FIGURE 26 WIPER RING WEAR RING “O” RING ROD SEAL PISTON SEAL ROD BEARING BACKUP RING “O” RING CYLINDER BARREL “O” RING BUSHING CYLINDER ROD PISTON...
  • Page 32 SECTION V EMERGENCY PLUNGER AND HOUSING REPAIR To manufacture a high quality control valve having a minimum amount of leakage, each plunger is honed to fit its respective bore. It is, therefore, recommended that the valve returned to the factory to repair or replacement.
  • Page 33 HUSCO MODEL “5000” SECTIONAL VALVE SERVICE INFORMATION The design and construction of the HUSCO Model 5000 Check valve malfunctioning is usually the result of foreign Sectional Valve allows for easy service or replacement of matter lodging between the seat and the poppet. Examine the various sections, seals and components.
  • Page 34 MAINTENANCE PROCEDURES LOAD CHECK VALVES C. LOAD CHECK VALVES FIGURE 28 Load Check Valve Load check valves used on HUSCO control valves normally do not require servicing; malfunction is usually t h e r e s u l t o f f o r e i g n m a t t e r l o d g i n g b e t w e e n t h e s e a t a n d p o p p e t . DISASSEMBLY Remove valve plug, poppet spring and poppet.
  • Page 35 FIELD TESTING PROCEDURES FIGURE 29 Pilot Operated - Sleeve Type Main Relief Valve To set main relief valve pressure, install a pressure gauge in the inlet line and set pressure as follows Remove acorn nut and loosen jam nut. Back off pilot adjustment screw and reset so that pilot adjustment screw just seats against pilot p o p p e t .
  • Page 36 MAINTENANCE PROCEDURES - RELIEF VALVES FIGURE 31 . Service Port Relief Cartridge DISASSEMBLY The cartridge type service port reliefs used in the Husco valves are of the pilot poppet type with external adjustment. Any malfunctioning is usually the result of foreign matter lodging between the piston, relief valve poppet, and check valve.
  • Page 37 MAINTENANCE PROCEDURES - PLUNGERS FIGURE 33 Double Acting - Spring Centered Plunger (Hydraulically Balanced) SEAL REPLACEMENT A one piece molded combination wiper and seal is used at each end of the plunger. The seals are positioned with a seal ring and retained by seal plates. To replace seal at tang end of plunger, remove screws and seal plate from housing.
  • Page 38 MAINTENANCE PROCEDURES - RELIEF VALVES FIGURE 34 Relief Valve - Pilot Operated (External Adjustment) The Cartridge relief valve shown it, Figure -1 is of the differential area type. When fluid enters the relief valve through the hole in the piston, an unbalanced condition in this area keeps main poppet and piston tightly sealed.
  • Page 39 MAINTENANCE PROCEDURES - RELIEF VALVES A combination cylinder relief valve and anti-void unit is illustrated in Figure 5 8. The service port relief valve is designed to control the maximum pressure obtained in the circuit. By discharging oil to the low pressure return passage, the service port relief valve provides maximum structural protection of circuit c o m p o n e n t s .
  • Page 40 INTRODUCTION The following information relates to the main and auxiliary hydraulic control valves used on the LOED H a n d l e r. GENERAL INFORMATION Disassembly and repair procedures are included in this Manual for the different types of relief valves, plunger styles, check valves, and special devices incorporated in the HUSCO control valves.
  • Page 41 SECTION II TROUBLE SHOOTING FIGURE 40...
  • Page 42 MAINTENANCE PROCEDURES - FORWARD - REVERSE VALVE (Disassembly) FIGURE 41 Step 1: Remove socket head cup screws (No. 1), spacers Continued ring groove is clean and has not been damaged (No. 2), and plunger cap (No. 3). in any way. Insert plunger (No. 4) through the Step 2: detent sleeve until the rear of the plunger is even Insert rod through all holes in tang end of plungers...
  • Page 43 MAINTENANCE PROCEDURE - FORWARD - REVERSE VALVE (Reassembly) FIGURE 42 Take the plunger (No. 4) out of the vise and dip Step 1: Clean all parts in solvent and blow dry with com- Step 7: the tang end in oil. Now gently insert it into the pressed air.
  • Page 44 TROUBLESHOOTING GUIDE FOR GEAR TYPE HYDRAULIC PUMPS FIGURE 43...
  • Page 45 HYDRAULIC PUMP Disassembly Remove nuts (23) and washers from Clean outside of pump thoroughly. s t u d s . M a r k t h e P u m p s e c t i o n s o n t h e s i d e n e a r e s t t o t h e d r i v e s h a f t e x t e n - s i o n s o t h a t t h e y c a n b e r e a s s e m b l e d b a c k t o t h e o r i g i n a l r e l a t i o n s h i p .
  • Page 46 Grasp the drive shaft extension and Using vise grip pliers, remove stud lift upward to dislodge the pressure bolts (22) from pump. (Figure 47) plate. Grasp the pressure plate between thumb and forefinger and lift straight up off the shafts. (Figure 49) FIGURE 49 FIGURE 47...
  • Page 47 It will be necessary to remove any Bearing plate (3) can be removed burrs from the gear “track-in” in by using method described in the body (1) before attempting to Step 14. remove pressure plate (9). After burrs have been removed, the plate Disassemble the next section by can be lifted out.
  • Page 48 Assembly Install back-up ring (14), o-ring If Parts 1, 2, 3, and 4 are re- (12), and retainer ring (13). placed, examine the new parts and (Figure 54) remove any nicks or burrs. flash in clean solvent. Make sure that an identifying mark is put on each new part and on the same side as it was on the old part.
  • Page 49 Install the isolation plate (10) Install the drive gear and idler gear. The drive gear should be in with its square edges on the suction the bore nearest the identifying port side. Install back-up ring (14), o-ring (12), and retainer (13) mark made in Step 2, with the splined end up.
  • Page 50 FIGURE 60 FRONT DRIVE GEAR TO BE TIMED WITH REAR DRIVE GEAR BY LINING UP A TOOTH ON REAR DRIVE WITH VALLEY OF TWO TEETH ON FRONT DRIVE TIMING SKETCH...
  • Page 51 Install the spline coupling (16) and Install and tighten stud bolts. O-ring (25). (Figure 61) (Figure 63) FIGURE 61 FIGURE 63 If a new flange plate (4) is used, Install dowels (20). plug (27) will have to be pressed into seal drain hole on the dis- Install body (1) with identifying charge side of the flange plate.
  • Page 52 Install o-ring (24) in the flange Correct the cause of interference plate. Use heavy grease to hold and reassemble the pump. the o-ring in the groove while the plate slides down over the shafts. Refer to Step 32 and use the same precautions in the final assembly of the flange plate.
  • Page 53 Seal Replacement Stand pump on end and loosen all The rubber lip of the seal should fasteners holding flange to body. point toward the rear of the pump Remove flange. so that the garter spring is inside. (Fig. 70) Lay the flange on a smooth clean surface and remove snap ring.
  • Page 54 By tightening the vise firmly, but gently, press the seal into the bore. Stop the pressure when the seal touches the shoulder inside the bore. Replace snap ring, making sure that it snaps into the groove properly. Wash the flange thoroughly in sol- vent.
  • Page 55 REAR DRIVE MOTOR FIGURE 72...
  • Page 56 PARTS IDENTIFICATION FIGURE 73...
  • Page 57 D I S A S S E M B LY Clean the outside of the motor thoroughly. Mark the motor sections on the drive shaft extension side so that they can be reassembled exactly in the same order as they were originally. (Fig. 74) FIGURE 75 Remove nuts (21) and washers (22) from the flange.
  • Page 58 Keeping the flange (1) as straight Use a stud driver or vise-grip pliers as possible, lift it off the shaft and remove studs (42). (Fig. 79) and stud bolts. If the flange is stuck, use a wooden mallet or plastic hammer and tap around the edge to loosen it.
  • Page 59 Lift drive gear (5) and idler gear Remove isolation plate (11), sealing ( 7 ) s t r a i g h t u p o u t o f t h e m o t o r strip (17), end separators (15) body.
  • Page 60 To disassemble the rear section, it Remove the valve body by tapping will be necessary to reverse its lightly on the plugs (39) with a soft position in the vise (rear end up). hammer. (Fig 87) (Fig. 85) FIGURE 87 FIGURE 85 Remove nut (21) and washer (22).
  • Page 61 To disassemble the valve from the Items (28) and (30) are not service- valve body, remove plug (39) and able separate from valve body (3). o-ring (40). (Fig. 16) Wash all of the motor parts thoroughly with clean solvent and blow them dry with compressed air.
  • Page 62 REASSEMBLY Take cover plate (23) and place it on a clean flat surface with the o-ring groove facing up. Install o-ring (20). (SPM20 only) Place the motor body (4) on the cover plate (SPM20) with the gear bore facing up. Make sure that the mark made in, Step 2 is facing you.
  • Page 63 Examine the isolation plates. You will note that they are slightly different. Choose the two having rounded edges as shown. Install these two (11) in the bottom of the motor body with the rounded edges down and in their proper location.
  • Page 64 FRONT DRIVE TO BE TIMED WITH REAR DRIVE BY LINING UP A TOOTH ON REAR DRIVE WITH VALLEY OF TWO TEETH ON FRONT DRIVE FIGURE 97 SKETCH ‘A’...
  • Page 65 Install center separator (16), end Pick up valve body (3). Turn separators (15), sealing strip (17), it so that the side which has the and isolation plates (10). (No bearings extended will face up. separators nor isolation plates in Apply enough clean, heavy grease SPM25.) (Fig.
  • Page 66 Position the assembly with the valve body up and install o-ring (34) and spline coupling (31). Make sure the gears are not turned from the timing position until after the other set of gears has been assembled. (Fig. 103) FIGURE 101 FIGURE 103 Lay the partially assembled unit on Install motor body (2) with the mark...
  • Page 67 Install stud (42). Use 10" wrench and check to see if the drive shaft will turn freely. The shaft will be tight but should S e e a p p l i c a b l e s e a l R e p l a c e m e n t turn with a maximum of 5 to 10 lb/ft.
  • Page 68 INSPECTION OF MOTOR PARTS In stall a piston (27) and spring (32) in each piston bore. (Fig. 107) Visually inspect all parts. There will be a gear track on the inside of the motor body. Measure the depth of this gear track. The nominal depth of this cut is .008"...
  • Page 69 SEAL REPLACEMENT INSTRUCTIONS SPM20 Stand the motor on end, shaft up. Use a brush and solvent and wash the flange end thoroughly. Dry it with compressed air or by thorough wiping with a clean, dry rag. This action will help to prevent foreign material from entering the motor.
  • Page 70 Install the snap ring, making sure it snaps into the groove properly. (Fig. 112) FIGURE 110 FIGURE 112 Position the new seal over the bore with the rubber lip entering first. Wash the flange in clean solvent, Center a press ring (or a socket blow it dry and coat the seal lips wrench of appropriate size) against with clean grease.
  • Page 71 SEAL REPLACEMENT INSTRUCTIONS SPM25 Stand the motor on end, shaft up. Press the old seal out of the plate. USE EXTREME CARE IN REMOVING THE SEAL. Press it straight out of the seal bore. If a punch and hammer are used, move the punch around the seal so that it causes even movement of the seal down the bore.
  • Page 72 Place a smooth, clean block of wood Place the seal plate between the against the rubber face of the seal. open jaws of a machinist’s vise with Carefully tighten the vise and press the cast surface against the station- the seal into the bore. The seal any jaw.
  • Page 73 FIGURE 118 Place the assembled seal plate over the shaft and carefully slide it down into position on the flange. Install and tighten the seal plate capscrews.
  • Page 74 F R O N T D R I V E M O T O R ( b e f o r e s / n 2 3 7 ) FIGURE 119...
  • Page 75 FIGURE 120...
  • Page 76 DISASSEMBLY C l e a n t h e o u t s i d e t h e p u m p t h o r - oughly. P l a c e t h e p u m p m a c h i n i s t ’s v i c e s e c u r e l y, s h a f t u p , u s i n g a c l e a n b l o c k...
  • Page 77 REASSEMBLY Remove the remaining O-ring, back- up ring, retainer ring, and isolation plates. FIGURE 128 E x a m i n e t h e t w o i s o l a t i o n p l a t e s . Yo u w i l l f i n d t h a t t h e y a r e s l i g h t l y d i f - f e r e n t .
  • Page 78 REASSEMBLY I n f a l l t h e O - r i n g i n p l a c e a g a i n s t t h e b a c k - u p r i n g s o t h a t i t s e a t s i t s e l f i n - EXAMPLE t o t h e g r o o v e i n t h e e d g e o f t h e b a c k - up ring.
  • Page 79 REASSEMBLY previous leakage been evidence, replace. (See SEAL REPLACEMENT f o r d e t a i l e d i n s t r u c t i o n s . ) FIGURE 135 Pick up the other pressure plate. Hold- bronze side down,...
  • Page 80 REASSEMBLY FIGURE 139 Insert two of the capscrews with washers installed into opposite holes and torque to 175 lbs. ft. Using a 10" wrench, check to see if the drive shaft will turn. Shaft will be tight but should turn freely with a max- imum of 5 to 10 lbs.
  • Page 81 SEAL REPLACEMENT Wa s h t h e s e a l r e t a i n e r i n s o l v e n t a n d Stand the pump on end, shaft up. b l o w d r y. Using a brush and solvent, wash the P l a c e t h e c a s t s u r f a c e o f t h e r e t a i n e r entire flange end of the pump ONLY,...
  • Page 82 SEAL REPLACEMENT FIGURE 144 R e p l a c e t h e O - r i n g w i n g , h e a v y g r e a s e t o h o l d i t s e c u r e l y i n t h e O - r i n g g r o o v e . C o a t t h e s h a f t...
  • Page 83 BEARING REPLACEMENT-INSPECTION OF PARTS INSPECTION OF PARTS BEARING REPLACEMENT MOBIL-MASTER SERIES 20 & 25 Visually inspect parte. There will be a gear track on the inside of the Mobil-Master Series Pumps pump body. Measure depth this built with highest capacity bearings gear track.

  • Page 84: Bolt Torque Chart

    BOLT TORQUE CHART FIGURE 146 Grade 5--3 radial dashes 1 2 0 d e g r e e s a p a r t . Grade 8--6 radial dashes 6 0 d e g r e e s a p a r t . FIGURE 147 B o l t s f o u n d...

  • Page 85: Hydraulic Fitting Torque Chart

    HYDRAULIC FITTING TORQUE CHART W i p e f i t t i n g s . Apply LOCTITE Hydraulic Sealant first (closest f l a n g e o r s e a s ) o f t h e f i t t i n g t h r e a d s . S e a t f l a n g e h a n d t i g h t , t h e n t o r q u e t o s p e c i f i c a t i o n .

  • Page 86: Electrical Schematic

    FIGURE 149 ELECTRIC SCHEMATIC -SOLENOID VALVE CIRCUIT SHOWN -IN 4-WHEEL -HI-LO SWITCH SHOWN IN LO -SERIES/PARALLEL SWITCH SHOWN -IN PARALLEL MODEL 534 WITH -FLOW SWITCH SHOWN IN LOW FLOW POSITION -NEUTRAL START SWITCH SHOWN IN NEUTRAL CHRYSLER ENGINE...
  • Page 87 FIGURE 150 ELECTRICAL SCHEMATIC -SOLENOID VALVE CIRCUIT SHOWN IN 4-WHEEL -A-B SWITCH SHOWN IN B MODEL 534 WITH -SERIES/PARALLEL SWITCH SHOWN IN PARALLEL -NEUTRAL START SWITCH SHOWN IN NEUTRAL FORD ENGINE...
  • Page 88 FIGURE 151...
  • Page 89 FIGURE 152...
  • Page 90 FIGURE 151 FIGURE 153...
  • Page 91 FIGURE 154...

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