Gradall LOED 534A Service Manual Instrukcja Użytkownika

LOED MATERIAL HANDLER MODEL 534A Service Manual PART NO. 9020-5896®IMPORTANTREAD AND UNDERSTAND THIS MANUALBEFORE STARTING

Retraction ChainRetraction Chain Ears - Section 1Section ThreeRetraction Chain Ears - Section 39Guide PanStrongbackHose Retainer NutsExtension Chain N

BOOM HOSE REPLACEMENTIF HOSE IS INTACTRemove rear boom cover.Disconnect hose retainer and remove tensioning spring.Connect new hose to old hose with s

SHIFT CONTROL LINKAGE ADJUSTMENTPut shift control in 1st gear.Adjust valve linkage (A) so micro switch (B) is actuatedwith spool pulled down to stop.A

BRAKE ADJUSTMENTSERVICE BRAKENote: Prior to any brake adjustment the forward-reverse linkagemust be adjusted as follows:With the forward-reverse lever

GENERAL:Do not mount or demount tires withoutproper training. Follow all procedures andsafety instructions. Wall charts containingmounting and demount

Mixing parts of one type rim with those ofanother is potentially dangerous. Alwayscheck DOT chart or manufacturer forapproval.Don’t reinflate a tire t

TWO-PIECE RIMSCorrectThe components in a correctly assembled and lockedtwo-piece rim fit snugly.IncorrectAn incorrectly assembled two-piece rim could

Badly worn, rusted and corroded rims and components aredangerous and should be replaced with newparts.Such hazards prevent proper fit of components, a

WARNING!MISMATCHED RIM PARTS ARE DANGEROUSAND COULD CAUSE SEVERE INJURYMost highway rims look alike, but all vary somewhat incertain design features.

PARKING BRAKEFUNCTIONThe Parking Brake is spring loaded to apply the brake. Hydraulic pressure is usedto release or hold “off” the brake.DISSASSEMBLY

CONTENTSService/replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19FIGURE 19

POWER BRAKE MASTER CYLINDER REPAIR1.0 REMOVING BRAKE VALVE FROM VEHICLE ANDSEPARATlNG CYLINDER RESERVOIR SECTIONFROM POWER ASSIST SECTION. Refer toFig

CYLINDER RESERVOIR SECTIONDISASSEMBLY OF CYLINDER RESERVOIR SECTION. Refer to Figures 1 & 3.Drain fluid from unit before disassembling.Remove reta

POWER ASSIST SECTIONDISASSEMBLY OF POWER ASSIST SECTION. Refer to Figures 20 & 23.Drain fluid from unit before disassembling.Remove push rod (item

ASSEMBLY OF POWER ASSIST SECTION. Use only hydraulic oil in Power Assist Section.Use Repair Kit No. 02-400-059. Refer to Figures 20 & 23.Clean all

PLANETARY HUBSASSEMBLY PROCEDURE FOR MAJOR ASSEMBLYStart with hub-spindle sub-assembly (1) with large open end up.Assemble internal gear (2) onto the

Secure cover sub-assembly (6) and ring gear (4) in place with bolts. Use fourshoulder bolts (18) for counterbored holes in hub of hub-spindle sub-asse

Place thrust washers (3B) inside carrier (3A) with greased side against carrier(3A) and the tang should be in cut away section of carrier (3A). Thrust

CARRIER SUBASSEMBLYFRONT: 24 TO 1REAR: 35 TO 127FIGURE 24

HYDRAULIC PRESSURE CHECKSNOTE: Do not attempt to adjust the hydraulic pressure settings onthis machine. A change from the factory settings indicates a

GENERAL INFORMATIONIMPORTANT SAFETY NOTICESafe operation depends on reliable equipment and proper operatingprocedures. Performing the checks and servi

HYDRAULIC CYLINDERSNOTE: Replace all seals whenever a cylinder is dissassembled for repair.DISSASSEMBLYRemove cylinder from machine.Use a spanner wren

WEAR RING“O” RINGPISTON SEALNUTCYLINDER BARRELBUSHINGCYLINDER ROD1.2.3.4.5.6.7.WIPER RINGROD SEALROD BEARINGBACKUP RING“O” RING“O” RINGPISTON 8. 9.10.

SECTION V EMERGENCY PLUNGER AND HOUSING REPAIRTo manufacture a high quality control valve having a minimum amount of leakage, each plunger is honed to

The design and construction of the HUSCO Model 5000Sectional Valve allows for easy service or replacement ofthe various sections, seals and components

MAINTENANCE PROCEDURES LOAD CHECK VALVESC. LOAD CHECK VALVESLoad check valves used on HUSCO control valves normally do not require servicing; malfunct

FIELD TESTING PROCEDURESTo set main relief valve pressure, install a pressure gauge in the inlet line and set pressure as followsRemove acorn nut and

MAINTENANCE PROCEDURES - RELIEF VALVESDISASSEMBLYThe cartridge type service port reliefs used in the Husco valves are of the pilot poppet type with ex

MAINTENANCE PROCEDURES - PLUNGERSSEAL REPLACEMENTA one piece molded combination wiper and seal is used at each end of the plunger. The seals are posit

MAINTENANCE PROCEDURES - RELIEF VALVESThe Cartridge relief valve shown it, Figure -1 is of the differential area type. When fluid enters the reliefval

MAINTENANCE PROCEDURES - RELIEF VALVESA combination cylinder relief valve and anti-void unit is illustrated in Figure 5 8. The service portrelief valv

SERVICEYour LOED Handler distributor is properly equipped to service your LOED Handler.Repairs should be made by trained and qualified service personn

INTRODUCTIONThe following information relates to the main and auxiliary hydraulic control valves used on the LOEDHandler.GENERAL INFORMATIONDisassembl

SECTION II TROUBLE SHOOTING41FIGURE 40

Remove socket head cup screws (No. 1), spacers(No. 2), and plunger cap (No. 3).Insert rod through all holes in tang end of plungers(No. 4) This will p

Clean all parts in solvent and blow dry with com-pressed air. Inspect all parts and if any are foundto be worn or deformed replace them with new ones.

TROUBLESHOOTING GUIDE FOR GEAR TYPE HYDRAULIC PUMPS44FIGURE 43

Clean outside of pump thoroughly.Mark the Pump sections on the sidenearest to the drive shaft exten-sion so that they can be reassembledback to the or

Using vise grip pliers, remove studbolts (22) from pump. (Figure 47)When disassembling the tandem pump,all parts removed with bodies(1 and 2) should b

It will be necessary to remove anyburrs from the gear “track-in” inthe body (1) before attempting toremove pressure plate (9). Afterburrs have been re

If Parts 1, 2, 3, and 4 are re-placed, examine the new parts andremove any nicks or burrs. flash inclean solvent. Make sure that anidentifying mark is

Install the drive gear and idlergear. The drive gear should be inthe bore nearest the identifyingmark made in Step 2, with thesplined end up. (Figure

MODEL 5346,000# Capacity4FIGURE 1

TIMING SKETCHFRONT DRIVE GEAR TO BE TIMED WITH REARDRIVE GEAR BY LINING UP A TOOTH ON REARDRIVE WITH VALLEY OF TWO TEETH ON FRONTDRIVE50FIGURE 60

33.40.39.38.51FIGURE 61FIGURE 63FIGURE 62FIGURE 6434.35.36.37.Install the spline coupling (16) andO-ring (25). (Figure 61)Install dowels (20).Install

Correct the cause of interferenceand reassemble the pump.When the shaft turns properly,lubricate the stud threads withSAE 10 oil and torque all of the

The rubber lip of the seal shouldpoint toward the rear of the pumpso that the garter spring is inside.(Fig. 70)Place a clean block of wood betweenthe

By tightening the vise firmly, butgently, press the seal into the bore.Stop the pressure when the sealtouches the shoulder inside the bore.Replace sna

REAR DRIVE MOTOR55FIGURE 72

PARTS IDENTIFICATION56FIGURE 73

Clean the outside of the motorthoroughly.Mark the motor sections on thedrive shaft extension side sothat they can be reassembledexactly in the same or

5.6.7.Use a stud driver or vise-grip pliersand remove studs (42). (Fig. 79)Grasp the drive gear shaft extension(5) and lift it slightly with aquick u

Remove isolation plate (11), sealingstrip (17), end separators (15)center separator (16), back-up ring(14), and o-ring (35). (No isola-tion plates nor

NOMENCLATURE5FORKSFORK FRAMEBOOM HEADTILT CYLINDERTHREE SECTION BOOMLIFT CYLINDERCOMPENSATING CYLINDERHYDRAULIC RESERVOIRFUEL TANKPLANETARY HUBCROWD C

Remove the valve body by tappinglightly on the plugs (39) with a softhammer. (Fig 87)Remove o-ring (34).To disassemble the rear motor sec-tions, repea

Items (28) and (30) are not service-able separate from valve body (3).Wash all of the motor parts thoroughlywith clean solvent and blow them drywith c

Take cover plate (23) and place iton a clean flat surface with theo-ring groove facing up. Installo-ring (20). (SPM20 only)Place the motor body (4) on

Examine the isolation plates. Youwill note that they are slightlydifferent. Choose the two havingrounded edges as shown. Installthese two (11) in the

FRONT DRIVE TO BE TIMED WITHREAR DRIVE BY LINING UP ATOOTH ON REAR DRIVE WITHVALLEY OF TWO TEETH ONFRONT DRIVESKETCH ‘A’64FIGURE 97

Pick up valve body (3). Turnit so that the side which has thebearings extended will face up.Apply enough clean, heavy greasein the o-ring groove to ho

Lay the partially assembled unit onits side and install studs (43),washers (22) and nuts (21). You canwait until the motor is completelyassembled befo

Install stud (42).See applicable seal ReplacementInstructions.Install o-rings (35) on bearingextensions of flange plate (1).Install o-ring (33) in the

Visually inspect all parts. Therewill be a gear track on the insideof the motor body. Measure the depthof this gear track. The nominaldepth of this cu

SEAL REPLACEMENT INSTRUCTIONSSPM20Stand the motor on end, shaft up.Use a brush and solvent and washthe flange end thoroughly. Dry itwith compressed ai

RETRACTION CHAIN REPLACEMENTDISSASSEMBLYRetract boom completely.Remove rear boom cover.Remove extension (large) chain adjusting nut and jam nut.Remove

Position the new seal over the borewith the rubber lip entering first.Center a press ring (or a socketwrench of appropriate size) againstthe metal bac

Stand the motor on end, shaft up.Use a brush and solvent and wash theentire flange end of the motorthoroughly. Blow it dry with com-pressed air. This

Place the seal plate between theopen jaws of a machinist’s vise withthe cast surface against the station-any jaw. (Fig. 115)Position the metal face of

Place the assembled seal plate overthe shaft and carefully slide itdown into position on the flange.Install and tighten the seal platecapscrews.7312.F

FRONT DRIVE MOTOR (before s/n 237)74FIGURE 119

75FIGURE 120

Grasp the drive shaft extension andlift the drive shaft slightly with a quickupward motion. This will dislodge thepressure plate from inside the bore

REASSEMBLYRemove the remaining O-ring, back-up ring, retainer ring, and isolationplates.Wash all ports thoroughly with cleansolvent and blow dry. This

Pick up one of the pressure plates andnote the bronze side. You will noticethat one of the sides has rounded trapslot milled into it. This side faces

Pick up the other pressure plate. Hold-ing the bronze side down, and therounded trap slot facing the dischargeside of the pump, install it into posi-t

7Guide PanStrongbackHose Retainer NutsExtension Chain NutsSection OneSection TwoTake-up BeamTake-up Beam BracketSection ThreeRetraction ChainSection T

Insert two of the capscrews with washersinstalled into opposite holes and torqueto 175 lbs. ft.Using a 10" wrench, check to see ifthe drive shaft

Stand the pump on end, shaft up.Using a brush and solvent, wash theentire flange end of the pump ONLY,and blow dry. This is to remove anyforeign mater

SEAL REPLACEMENT82Replace the O-ring wing, heavy greaseto hold it securely in the O-ring groove.Coat the shaft liberally with heavygrease to protect t

BEARING REPLACEMENTMOBIL-MASTER SERIES 20 & 25INSPECTION OF PARTSBEARING REPLACEMENT-INSPECTION OF PARTS83Mobil-Master Series 20 and 25 Pumps areb

BOLT TORQUE CHARTBolts found to be loose should be removed, wiped clean, and re-installed using LOCTITE 242 (blue-medium strength) or LOCTITE 271(red-

HYDRAULIC FITTING TORQUE CHARTWipe fittings.Apply LOCTITE Hydraulic Sealant to the first 1/3 (closest to theflange or seas) of the fitting threads.Sea

-SOLENOID VALVE CIRCUIT SHOWN -IN 4-WHEEL-HI-LO SWITCH SHOWN IN LO-SERIES/PARALLEL SWITCH SHOWN -IN PARALLEL-FLOW SWITCH SHOWN IN LOW FLOW POSITION-NE

-SOLENOID VALVE CIRCUIT SHOWN IN 4-WHEEL-A-B SWITCH SHOWN IN B-SERIES/PARALLEL SWITCH SHOWN IN PARALLEL-NEUTRAL START SWITCH SHOWN IN NEUTRALELECTRICA

FIGURE 150FIGURE 15188

FIGURE 15289

EXTENSION CHAIN REPLACEMENTDISSASSEMBLYRetract boom completely.Remove rear boom cover.Remove extension (large) chain adjusting and jam nuts.Remove hos

FIGURE 151FIGURE 15390

FIGURE 15491