DTM70-H Pump Selection and Flow Setting (DM20011)

Technical Support Subject DTM70-H Pump Selection and Flow Setting (DM20011) Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-DTM-001 A Eng Document Release BDJ 2 May 2018 GB 2 May 2018 CM 3 May 2018 3 May 2018 Knowledge Base Email: tech@vmacair.com : www.kb.vmacair.com Page 1 of 4 Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 System or Parts affected System DM20011 - DTM70-H, FORD 6.7L F250-F550, 2017+ Parts 4500147 PUMP, HYDRAULIC, DTM70-H, FORD,026 4500148 PUMP, HYDRAULIC, DTM70-H, FORD,037 4500149 PUMP, HYDRAULIC, DTM70-H, FORD,055 4500150 PUMP, HYDRAULIC, DTM70-H, FORD,061 Index System or Parts affected ................................................................................................................. 1 Overview ........................................................................................................................................... 1 Before placing an order................................................................................................................... 2 Hydraulic Pump Options ................................................................................................................. 2 Pump Port Styles .......................................................................................................................... 2 Performance Calculation................................................................................................................. 3 Flow calculation formulas:............................................................................................................. 3 Hydraulic Pump Identification ........................................................................................................ 3 Overview The VMAC DTM70-H Air Compressor is a Direct-Transmission™ mounted PTO driven air compressor with hydraulic pump. The air compressor and hydraulic pump are designed to run simultaneously. The air flow (cfm) and hydraulic flow (gpm) are dependent on the pump size and the engine speed (rpm). VMAC offers 4 hydraulic pumps which have all been approved for use with the DTM70-H. This document outlines how to select the hydraulic pump and engine speed to meet the air and hydraulic demands of the application. (Figure 1) Figure 1 – DTM70-H Transmission-Mounted™ Air / Hydraulic SystemTechnical Support Subject DTM70-H Pump Selection and Flow Setting (DM20011) Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-DTM-001 A Eng Document Release BDJ 2 May 2018 GB 2 May 2018 CM 3 May 2018 3 May 2018 Knowledge Base Email: tech@vmacair.com : www.kb.vmacair.com Page 2 of 4 Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 Before placing an order • Read the following sections on pump selection and flow setting. • Determine the minimum and maximum flow requirements for the application. Hydraulic Pump Options • VMAC offers 4 hydraulic pumps which have been approved for use with the DTM70-H. These pumps have been tested by VMAC with the DTM70-H system and verified to provide adequate clearance between the pump, vehicle and drivetrain components. • Gear pump options are listed below. (Table 1, Figure 2) Installation of hydraulic pumps not approved by VMAC may result in damage to the front driveshaft, VMAC compressor assembly, vehicle transmission, or the PTO, and may void the VMAC warranty. Pump Port Styles: • Table 1 summarizes the inlet and outlet port sizes for each pump option. • Figure 2 illustrates location / orientation of the pump ports. Item # Part # Description Inlet Port Outlet Port 1 4500147 PUMP, HYDRAULIC, DTM70-H, FORD,026 #12 ORB #10 ORB 2 4500148 PUMP, HYDRAULIC, DTM70-H, FORD,037 #12 ORB #10 ORB 3 4500149 PUMP, HYDRAULIC, DTM70-H, FORD,055 #12 ORB #10 ORB 4 4500150 PUMP, HYDRAULIC, DTM70-H, FORD,061 #16 ORB #10 ORB Table 1 – Pump part numbers Figure 2 – Pump portsTechnical Support Subject DTM70-H Pump Selection and Flow Setting (DM20011) Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-DTM-001 A Eng Document Release BDJ 2 May 2018 GB 2 May 2018 CM 3 May 2018 3 May 2018 Knowledge Base Email: tech@vmacair.com : www.kb.vmacair.com Page 3 of 4 Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 Performance Calculation Refer to Table 2 below for air flow and hydraulic flow at several common engine speed settings. Table 2 – Compressor and hydraulic pump performance chart To accurately determine pump output gpm or the engine rpm set point, reference the pump displacement table (Table 3) below and apply figures to the flow calculation formulas provided: Part # Description Displacement, gpr [Gal/Rev] 4500147 PUMP, HYDRAULIC, DTM70-H, FORD,026 0.0026 4500148 PUMP, HYDRAULIC, DTM70-H, FORD,037 0.0037 4500149 PUMP, HYDRAULIC, DTM70-H, FORD,055 0.0055 4500150 PUMP, HYDRAULIC, DTM70-H, FORD,061 0.0061 Table 3 – Displacement / gpr Flow calculation formulas: To determine gpm of a pump at a set engine rpm: ��� = (�������) × (���������) × 1.24(��� �����) × 0.90(���� ����������) To determine engine rpm for a desired flow: (���������) = ��� (������� × 1.24(��� �����) × 0.90(���� ����������)) Hydraulic Pump Identification The hydraulic pump installed on the DTM-H can be identified by doing the following: • Locate the Parker part number. o Look for a small part number ID plate of the top of the pump body (Figure 3). o Record the 10 digit part number. o Refer to Table 4 to determine the VMAC pump part number. • If the part number is not visible or the tag is missing, measure pump length: o Measure the length of the pump body as shown in Figure 3. o Refer to Table 4 to determine the VMAC pump part numberTechnical Support Subject DTM70-H Pump Selection and Flow Setting (DM20011) Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-DTM-001 A Eng Document Release BDJ 2 May 2018 GB 2 May 2018 CM 3 May 2018 3 May 2018 Knowledge Base Email: tech@vmacair.com : www.kb.vmacair.com Page 4 of 4 Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 Figure 3 – Pump identification points VMAC Part # Description Part # on Pump Pump body length IN (mm) 4500147 PUMP, HYDRAULIC, DTM70-H, FORD,026 3349110028 2.22 (56) 4500148 PUMP, HYDRAULIC, DTM70-H, FORD,037 3349110029 2.47 (63) 4500149 PUMP, HYDRAULIC, DTM70-H, FORD,055 3349110031 2.90 (74) 4500150 PUMP, HYDRAULIC, DTM70-H, FORD,061 3349110097 3.03 (77) Table 4 – Pump number / body length