349E, 349F and 352F Excavators and 349E MHPU Mobile Hydraulic Power Unit Tool Control System Caterpillar

Reference: Refer to Testing and Adjusting, "Work Tool Parameter - Program" for additional programming instructions and parameter descriptions.

Supply Pump for the Work Tool

Pump Flow Control Mode (Parameter #6)

Set the pump to supply oil flow to the work tool using the following parameter settings for the work tool.

Note: "Pump Flow Control Mode" is only available on the 336 through 320 size machines. Drive pump flow is only available for the work tool on the 349 and 311 through 319 size machines for this system.

Pump #1 - Drive Pump

Pump #2 - Idler Pump

Combined Flow - Both Pumps

1. Select Pump #1 or Pump #2.

   1. "ATT Valve #1" (Parameter #27 through #36) are now available for setting.

   2. "ATT Valve #2" (Parameter #37 through #45) are set by parameters used for "ATT Valve #1" for one pump setting.

      • Pump #1 is recommended when multiple operation of work tool along with swing or stick function are frequently used.

      • Pump #2 is recommended when multiple operation of work tool along with bucket or boom function are frequently used.

2. Select Combined Flow.

   1. (Parameter #27 through #45) are now available for setting.

Pump Flow to the Work Tool (Single Operation)

One Pump Flow using the Drive or Idler Pump

Note: Drive pump flow is only available for the work tool on the 349 and 311 through 319 size machines for this system.

1. Set the appropriate flow for the work tool to be installed by using the following parameter settings.

   "Atch #X Flow Setting" (Parameter # 27) - XXX [L/min]

   Show/hide table

   Table 1

   Maximum Flow Setting for One Pump Flow
   349E / 349F	385 L/min (101.7 US gal/min)
   336E / 336F	289 L/min (76.3 US gal/min)
   329E / 329F / 330F	247 L/min (65.3 US gal/min)
   326F	231 L/min (61.0 US gal/min)
   324E	231 L/min (61.0 US gal/min)
   323E / 320E / 320E N / 323 E N / 320E RR	214 L/min (56.5 US gal/min)
   320F / 323F N	211 L/min (55.7 US gpm)
   323F	209 L/min (55.2 US gpm)
   318E / 316E / 318F / 316F	150 L/min (39.6 US gal/min)
   314E CR / 314F / 315F	128 L/min (33.8 US gal/min)
   312E / 312F / 313F	128 L/min (33.8 US gal/min)

2. Work tool open and close speed can be decreased by lowering the following parameter value.

   1. Spool shift pressure adjustment to extend the attachment control valve.

      "Atch #X Max Ext Press" (Parameter #30 and #40) - XXXX [kPa]

   2. Spool shift pressure adjustment to retract the attachment control valve for two-way flow only.

      "Atch #X Max Ret Press" (Parameter #31 and #41) - XXXX [kPa]

      Note: For reference, this parameter is set within the range of 800 kPa to 2000 kPa.

Two Pump Flow

Note: Two pump flow is only programmable for the 336 through 320 size machines for this tool system.

1. Set the appropriate flow for the work tool to be installed by using the following parameter settings.

   "Atch #1 Flow Setting" (Parameter # 27) - XXX [L/min]

   Show/hide table

   Table 2

   Maximum Flow Setting for Two Pump Flow
   349E / 349F	770 L/min (203.4 US gal/min)
   336E / 336F	578 L/min (152.7 US gal/min)
   329E / 329F / 330F	494 L/min (130.5 US gal/min)
   326F	462 L/min (122.0 US gal/min)
   324E	462 L/min (122.0 US gal/min)
   323E / 320E / 320E N / 323 E N / 320E RR	428 L/min (113.1 US gal/min)
   320F / 323F N	422 L/min (111.5 US gpm)
   323F	418 L/min (110.4 US gpm)

2. Work tool open and close speed can be decreased by lowering the following parameter value.

   1. Spool shift pressure adjustment to extend the attachment control valves.

      "Atch #1 Max Ext Press" (Parameter #30) - XXXX [kPa]

      "Atch #2 Max Ext Press" (Parameter #40) - XXXX [kPa]

   2. Spool shift pressure adjustment to retract the attachment control valves for two-way flow only.

      "Atch #1 Max Ret Press" (Parameter #31) - XXXX [kPa]

      "Atch #2 Max Ret Press" (Parameter #41) - XXXX [kPa]

      Note: For reference, this parameter is set within the range of 800 kPa to 2000 kPa. A parameter setting for spool shift pressure of 0 kPa is not made for flow from two pumps.