Bobcat 853H Service Manual Page 78
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MAIN RELIEF VALVE (Cont’d)
Checking The Main Relief Valve Without Auxiliaries
The tools listed will be needed to do the following
procedure:
MEL10003 – Hydraulic Tester
MEL10006 – Hydraulic Test Kit
Stop the engine.
Lift and block the loader. (See Page 1–1.)
Disconnect the hydraulic hoses (Item 1) [A] at the tilt
cylinder.
Connect the hydraulic tester to the tilt cylinder hoses [B].
Have a second person in the operator seat, with seat bar
in down position.
When an engine is running in an enclosed
area, fresh air must be added to avoid
concentration of exhaust fumes. If the engine
is stationary, vent the exhaust outside.
Exhaust fumes contain odorless, invisible
gases which can kill without warning.
W–2050–1285
The hydraulic tester must be in the fully open
position before you start the engine.
I–2024–0284
Start the engine and run at idle RPM.
Push the tilt pedal at the top (toe) or bottom (heel) until
the hydraulic tester shows the correct fluid flow through
the flow meter.
Increase the engine RPM to maximum.
There should be 18.0 GPM (68,1 L/min.) free flow.
Turn the restrictor control, at the tester, to increase the
pressure until the main relief valve opens.
The correct pressure is 2700–2750 PSI (18617–18961
kPa).
If not, stop the engine.
Replace or adjust the main relief valve. (See Page 2–15.)
A
P–01187
1
853, 853H Loader
–2–21– Service Manual
B
P–01193
- MAINTENANCE SAFETY 3
- ALPHABETICAL INDEX 5
- Cont’d On Next Page 5
- ALPHABETICAL INDEX (Cont’d) 6
- CONTENTS 7
- FOREWORD 8
- 853, 853H Loader 10
- Service Manual 10
- I–2019–0284 11
- SI05–0299 11
- W–2003–0299 11
- W–2044–1285 11
- SI06–0398 12
- –1–1– Service Manual 15
- ITEM SERVICE REQUIRED 17
- W–2003–0199 18
- CD–11160 18
- CD–11159 18
- W–2058–0494 19
- MC–01242 19
- P–05090 P–05077 19
- MC–01241 19
- W–2046–1290 20
- W–2007–1285 20
- MC–01434 20
- MC–01664 20
- W–2059–0991 21
- W–2271–1197 21
- W–2069–1285 23
- CD–15126 23
- W–2014–1285 23
- CD–15124 24
- CD–15118 26
- CD–15117 26
- MC–02042 26
- CD–15119 27
- CD–15121 27
- CD–15120 27
- W–2063–0887 28
- W–2103–1285 28
- CD–15123 28
- CD–10847 29
- CD–15114 31
- AVOID ENGINE DAMAGE 32
- CD–09339 34
- CD–15162 35
- CD–10855 35
- CD–15161 35
- CD–15135 35
- CD–15132CD–15134 37
- CD–15133 37
- W–2078–1285 39
- I–2057–0794 39
- CD–15165 39
- CD–15164 40
- CD–15170 41
- CD–15168 41
- CD–15171 41
- CD–15167 42
- CD–15166 42
- CD–11144 43
- –2–1– Service Manual 45
- HYDRAULIC SYSTEM INFORMATION 47
- –2–3– Service Manual 47
- –2–5– Service Manual 49
- (S/N 508411001-15215) 56
- S/N 510125001-26791) 56
- (S/N 510250001-50691) 56
- MC2396U (5-19-99) 57
- Printed in U.S.A 57
- (Printed June 1999) 58
- MC2397LU 58
- MC2397U (5-19-99) 59
- MC2398LU (5-19-99) 60
- MC2398U (5-19-99) 61
- MC2399LU 62
- MC2399U (5-19-99) 63
- W–2145–0290 65
- W–2072–0496 66
- CD–15067 66
- CD–15066 66
- CD–15069 66
- CD–15068 66
- CD–15070 67
- CD–15073 67
- CD–15072 67
- CD–15074 68
- CD–15076 68
- CD–15077 69
- CD–15078 69
- TS–01060 70
- TS–01098 71
- MC–01688 71
- P–10456P–10450 75
- I–2024–0284 78
- CD–11193 79
- CD–15094 79
- CD–15091 79
- CD–15093 79
- W–2006–0284 82
- MC–01654 83
- CD–10939 85
- CD–10940 85
- CD–10938 85
- CD–10941 86
- CD–10943 86
- CD–10944 86
- CD–10942 86
- CD–10945 92
- CD–10947 92
- CD–10946 92
- CD–11093 93
- CD–10954 95
- CD–10957 96
- CD–10959 96
- CD–10958 96
- CD–10960 97
- CD–10961 97
- AVOID INJURY OR DEATH 101
- –3–1– Service Manual 102
- W–2004–1285 104
- FUNCTION 1 105
- FUNCTION 2 105
- W–2184–0395 110
- MC–01944 110
- MC–01943 112
- N–00302N–00301 113
- CD–11204 113
- W–2017–0286 114
- I–2003–0284 118
- W–2059–0598 118
- CD–10993 120
- CD–10995 120
- CD–10996 120
- CD–10994 120
- CD–10997 121
- Cd–10998 121
- CD–10999 122
- CD–11001 122
- CD–11002 122
- CD–11000 122
- CD–11003 123
- CD–11004 123
- CD–12634 135
- CD–12636 135
- CD–12637 135
- CD–12635 135
- CD–12638 136
- CD–12640 136
- CD–12639 136
- CD–12641 137
- CD–12643 137
- CD–12644 137
- CD–12642 137
- CD–12645 138
- CD–12646 138
- CD–12647 138
- MC–01648 138
- CD–12648 139
- CD–12650 139
- CD–12651 139
- CD–12649 139
- CD–12652 140
- CD–12653 140
- CD–12655 141
- CD–12656 141
- –4–1– Service Manual 144
- CD–11014 146
- CD–11016 146
- CD–11015 146
- CD–10989 147
- CD–10988 147
- CD–11017 147
- CD–10937 147
- CD–11019 148
- CD–11018 148
- CD–11020 149
- CD–11022 149
- CD–11023 149
- CD–11021 149
- CD–11024 150
- CD–11026 150
- CD–11025 150
- CD–08824 151
- CD–11027 151
- W–2186–0395 152
- –5–1– Service Manual 172
- W–2113–0288 175
- CD–15125 176
- CD–15075 178
- CD–15169 182
- AVOID INJURY 185
- –6–1– Service Manual 188
- –6–3– Service Manual 190
- ACCESSORY FUSE 193
- ENGINE FUSE 193
- JUMPER WIRE - CONNECTS TO 204
- STUMP GRINDER 50 ONLY 204
- TO FR..AUX. BASE END SOLENOID 204
- S/N 512811001 - 14999 206
- (S/N 5101) 208
- (S/N 11010 & Bel.) 208
- W–2065–1296 209
- CD–15008 209
- CD–15137 209
- CD–15136 209
- W–2050–1285 213
- I–2023–1285 214
- CD–15139 219
- CD–15138 219
- CD–15140 219
- CD–08924 221
- CD–08926 221
- CD–08927 221
- CD–08925 221
- CD–08928 222
- CD–08930 222
- CD–08929 222
- EARLY MODELS 226
- –7–1– Service Manual 227
- –7–3– Service Manual 229
- CD–15015 239
- TS–01002 243
- SHORT HOUSING 255
- LONG HOUSING 255
- MC–01771 265
- MC–01765 265
- 3 o’clock 268
- Position 268
- I–2029–0289 270
- MC–01665 272
- 12 o’clock Position 272
- I–2027–0284 275
- INCORRECTCORRECT 276
- B–08423B–08422 309
- B–08427B–08426 310
- 853,853H Loader 317
- –8–1– Service Manual 317
- CD–09025 319
- SUBJECT DISPLAY READS 321
- CONDITION 321
- LCD DISPLAY 323
- CONNECTOR 323
- –9–1– Service Manual 327
- LOADER SPECIFICATIONS 329
- TS–01619 338
- I–2003–0888 338
- Port Seal and O–ring Boss 341
- Tightening Torque 341
- W–2074–1285 342
- W–2027–1285 342
- U.S. TO METRIC CONVERSION 343
- SERVICE MANUAL 345
- REVISION 345
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