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Graco GH 833 16U287, Repair Manual, Page: 23 / 34

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Graco GH 833 16U287 Repair Manual Download Page 23

Hydraulic Pump Replacement

311283H

23

8. Remove two top bolts (86) and two bottom nuts (84) 

securing reservoir (64) to frame.

9. Lift reservoir (64) out of frame.

Installation

1. Install plug (102), return elbow (31), suction fitting 

(32), inlet screen (89) and filter assembly (111) in 
new reservoir (64). 

2. Install new reservoir (64) in frame.

ti7846

ti7786

64

ti7806

27

111

32

102

31

89

ti7893

64

ti7781

Summary of Contents for GH 833 16U287

Page 1: ...9318 249617 253471 253472 16U287 16U288 16V258 16V260 4000 psi 27 6 MPa 275 8 bar Maximum Working Pressure Related Manuals IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manu...

Page 2: ...se only grounded hoses Hold gun firmly to side of grounded pail when triggering into pail If there is static sparking or you feel a shock stop operation immediately Do not use equipment until you iden...

Page 3: ...URIZED ALUMINUM PARTS HAZARD Do not use 1 1 1 trichloroethane methylene chloride other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment Such use ca...

Page 4: ...6 7 12 9 10 11 8 Ref Description 1 Engine Controls 2 Engine ON OFF Switch Electric Start Models 3 Engine ON OFF Switch 4 Lift Location 5 Suction Holder 6 Trigger Lock 7 Drain Valve 8 Lock Ring 9 Hydr...

Page 5: ...kits Test repairs after problems are corrected If sprayer does not operate properly review repair procedure to verify you did it correctly See Trou bleshooting page 7 Do not touch moving parts with f...

Page 6: ...neces sary Keep TSL in nut to help prevent fluid build up on piston rod and premature wear of packings and pump corrosion After first 20 hours of operation Drain engine oil and refill with clean oil...

Page 7: ...FF Pry rod up or down until hydraulic motor shifts Displacement pump operates but output is low on upstroke Piston ball check not seating properly Service piston ball check See man ual 311485 Piston p...

Page 8: ...for loose connections on siphon assembly tighten then rep rime pump Loose intake suction Tighten Fluid supply is low or empty Refill supply container Excessive hydraulic pump noise Low hydraulic flui...

Page 9: ...the hose 3 Remove compensator screws and separate com pensator and adapter block 4 Install new gaskets and torque screws 5 Install cover 140 with four screws 79 Torque to 25 30 in lb 2 8 3 4 N m Inst...

Page 10: ...ir instructions Removal 1 Flush pump 36 Stop pump on down stroke if possible 2 Relieve pressure page 5 3 Remove suction set 147 from pump 36 4 Remove filter housing 110 page 15 5 Remove clip 121 6 Sli...

Page 11: ...Screw pump completely up into power head 3 Hand tighten jam nut 122 Then tighten securely 1 8 to 1 4 turn with hammer or torque to 330 ft lb 447 4 N m 4 Slide cover 124 up over pump rod With engine in...

Page 12: ...Displacement Pump Replacement 12 311283H 7 Install clip pin 121 to secure 8 Install filter housing 110 page 15 9 Connect suction hose 147 to pump outlet 36 121 125 ti7809 ti7772 110 36 147...

Page 13: ...d from unit Installation 1 Install power head on unit 2 Tighten power head bolts 7 Torque bolts to 400 10 in lb 45 1 N m 3 Attach hoses 100 101 to head 75 Torque to 450 10 in lb 50 84 N m 4 To purge a...

Page 14: ...HydraulicMotor 14 311283H Hydraulic Motor 1 2 3 4 1 450 in lb 51 N m 600 in lb 68 N m 60 in lb 7 N m 930 in lb 105 N m Torqued in 3 steps 2 3 4 ti7868...

Page 15: ...ove paint and drain lines from filter housing 3 Loosen filter housing fitting 110 until housing and remove housing from pump Installation 1 Install filter housing 110 in pump opening 2 Tighten fitting...

Page 16: ...e pressure page 5 Allow hydraulic system to cool before beginning the service procedure 2 Drain oil Changing Hydraulic Oil procedure page 16 3 Remove screw 197 and pump handle cover 196 Remove four co...

Page 17: ...and grommets 80 2 each side 6 Remove belt cover 67 7 Remove belt 19 page 20 8 Loosen set screws 87 on front of large pulley 4 9 Remove pulley 4 from hydraulic pump shaft 10 Remove nuts 10 and screws 9...

Page 18: ...8 N m Torque fitting 34 to 450 in lb 50 8 N m NOTE Fill pump casing with hydraulic oil before install ing fitting 34 2 Install new pump 3 in frame 3 Install screws 9 and nuts 10 Torque to 225 10 in l...

Page 19: ...ers 78 and screws 79 2 each side Torque screws to 25 30 in lb 2 8 3 4 N m 9 Install suction lines Tighten fittings Torque fitting A to 225 10 in lb 25 4 1 1 N m Fitting B to 450 10 in lb 50 1 1 1 N m...

Page 20: ...With the palm of your hand hold the belt snug to large pulley while at the same time slowly pull engine recoil to rotate pulleys d Check belt 19 alignment on both large 4 and small pulley 6 When prope...

Page 21: ...en engine bolts 21 Torque to 225 10 in lb 25 4 1 1 N m c Check belt 19 alignment on both large 4 and small pulley 6 When properly positioned over pulleys belt should be centered on pulleys and complet...

Page 22: ...16 Keep plug for use on new res ervoir 3 Remove fill cap 27 and filter assembly 111 Keep for use on new reservoir 4 Loosen and remove suction hose 153 5 Remove and keep suction fitting 32 for use on...

Page 23: ...securing reservoir 64 to frame 9 Lift reservoir 64 out of frame Installation 1 Install plug 102 return elbow 31 suction fitting 32 inlet screen 89 and filter assembly 111 in new reservoir 64 2 Install...

Page 24: ...4 Torque to 225 in lb 14 1 N m 5 Reattach return lines 100 101 Torque to 450 10 in lb 51 1 1 N m 6 Reattach suction hose 153 Toque to 600 10 in lb 68 1 1 N m 7 Verify drain plug has been replaced Fill...

Page 25: ...filter 108 off cap 155 Installation 1 Install new o ring 113 from kit 2 Install new filter 108 over cap 155 3 Install cap 155 and filter 108 in filter housing 111 Hand tighten cap till snug Then torq...

Page 26: ...Loosen ground screw and remove ground clamp 95 from sprayer 3 Loosen and remove return line to oil tank and hydraulic line to cooler 4 Remove screws 79 washers 78 and support bar 77 from cooling coil...

Page 27: ...d screws 79 Tighten screws 2 Reconnect return line to oil tank and hydraulic line to cooler Torque to 225 in lb 25 4 N m 3 Replace ground wire 95 and tighten screw Torque to 25 30 in lbs 2 8 3 4 N m 4...

Page 28: ...only necessary if you are replacing the engine When you install a new engine you reuse the existing pulley Removal a Loosen set screw 87 located on the side of the pulley 6 b Remove large bolt 24 in t...

Page 29: ...Engine Replacement 311283H 29 67 79 78 80 21 10 86 46 45 5 81 82 5a 19 4 6 65 24 14 86 87 139 ti20932a...

Page 30: ...k or trailer bed you must reposition the handle 1 Remove four handle sleeve screws 143 2 Pull handle assembly 25 out of upper frame tubes 1 3 Remove frame tube plugs 120 located behind the wheels 4 In...

Page 31: ...frame as indicated in the following illustration 1 Reposition handle steps 1 5 page 30 2 Place U bolts over sprayer frame and through holes in vehicle bed Place a washer and nut over bolt end Using a...

Page 32: ...46 3 guns 037 4 guns 032 5 guns 028 6 guns 026 Fluid Inlet inches 1 1 2 to 11 1 2 NPT m Fluid Outlet inches 1 to 11 1 2 NPT f Dimensions Weight lb kg Electric Start 398 181 Pull Start 360 163 Height i...

Page 33: ...Notes 311283H 33 Notes...

Page 34: ...of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY...

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