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Diamond Air DA425EA User Manual

Underhood air compressor
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DA425EA: 99900679:
19990121
i
Model DA425EA
Underhood Air Compressor
(Replaces Model HD750)
IOWA MOLD TOOLING CO., INC.
BOX 189, 500 HWY 18 WEST, GARNER, IA 50438
TEL: 515-923-3711
TECHNICAL SUPPORT FAX: 515-923-2424
MANUAL PART NUMBER 99900679

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Summary of Contents for Diamond Air DA425EA

  • Page 1 DA425EA: 99900679: 19990121 Model DA425EA Underhood Air Compressor (Replaces Model HD750) IOWA MOLD TOOLING CO., INC. BOX 189, 500 HWY 18 WEST, GARNER, IA 50438 TEL: 515-923-3711 TECHNICAL SUPPORT FAX: 515-923-2424 MANUAL PART NUMBER 99900679...
  • Page 2 DA425EA: 99900679: 19980521 PRECAUTIONS Read before operating your compressor! DANGER EXPLODING TANK WILL CAUSE DEATH, SERIOUS INJURY OR PROPERTY DAMAGE Drain air tank after each use to prevent moisture build-up and corrosion which leads to tank failure. Assure that tank and compressor relief valves work properly, and are at correct pressure settings.

  • Page 3: Table Of Contents

    DA425EA: 99900679: 19980223 TABLE OF CONTENTS PARA TITLE PAGE SPARE PARTS LIST Section 1. SPECIFICATIONS 1-1. GENERAL ....................1-1 1-2. SPECIFICATIONS ..................1-1 Section 2. INSTALLATION 2-1. GENERAL ....................2-1 2-2. AIR COMPRESSOR ................. 2-1 2-3. UNDERDASH SWITCH ................2-1 2-4.
  • Page 4 19980223 RECOMMENDED SPARE PARTS LIST 1 Year Supply DA425EA AIR COMPRESSOR For Manual: 99900679 This spare parts list does not necessarily indicate that the items can be expected to fail in the course of a year. It is intended to provide the user with a stock of parts sufficient to keep the unit operating with minimal down-time waiting for parts.

  • Page 5: Section 1. Specifications

    DA425EA: 99900679: 19951003 SECTION 1. SPECIFICATIONS 1-1. GENERAL 1-2. SPECIFICATIONS CAUTION OPERATING THE COMPRESSOR AT PRESSURES ABOVE 150 PSI WILL SHORTEN THE SERVICE LIFE AND VOID THE WARRANTY. FIGURE A-1. OUTSIDE DIMENSIONS...

  • Page 6: Section 2. Installation

    The purpose of the underhood switch is to prevent This section pertains to the installation of the IMT the compressor from running unless the vehicle’s DA425EA compressor and related components. hood is raised. This will ensure sufficient air flow to Because installations will vary somewhat, dependent the compressor during operation.

  • Page 7: Section 3. Operation

    DA425EA: 99900679: 19951003 SECTION 3. OPERATION 3-1. GENERAL 3-2. OPERATION NOTE ON UNITS WITH MANUAL ENGINE SPEED CONTROL, THE ENGINE RPM WILL INCREASE WHEN THE COMPRESSOR CLUTCH DISENGAGES. CAUTION THIS UNIT IS EQUIPPED WITH AN UNDERHOOD SAFETY SWITCH WHICH REQUIRES THAT THE HOOD BE RAISED WHILE THE COMPRESSOR IS IN OPERATION.
  • Page 8 DA425EA: 99900679: 19930125...

  • Page 9: Section 4. Maintenance & Parts

    DA425EA: 99900679: 19951003 Section 4. MAINTENANCE & PARTS 4-1. GENERAL FIGURE D-1. ROUTINE MAINTENANCE CHECKLIST...
  • Page 10 DA425EA: 99900679: 19970619 FIGURE D-2. DA425EA UNDERHOOD AIR COMPRESSOR (51711330-1) ITEM PART NO. DESCRIPTION ITEM PART NO. DESCRIPTION 1. 60025012 CRANKCASE (PART OF 83) 1REF 55. 72066307 DRIVE PIN (PART OF 84) 1REF 2. 60025010 CYLINDER BLOCK 56. 70055010 REAR BRG CUP (PART OF 82) 1REF 3.
  • Page 11 DA425EA: 99900679: 19980521 FIGURE D-2A. DA425EA UNDERHOOD AIR COMPRESSOR (51711330-2)
  • Page 12 DA425EA: 99900679: 19970619 FIGURE D-2B. DA425EA UNDERHOOD AIR COMPRESSOR (51711330-3)

  • Page 13: Pressure Switch Installation Instructions

    DA425EA: 99900679: 19960802 REMOTE MOUNTED PRESSURE SWITCH 4. Install the 1/8-1/4 adapter (72053832) in the INSTALLATION INSTRUCTIONS (99900501) check valve block and attach the 1/4" airline hose. 1. Locate pressure switch mounting bracket 5. Continue assembly as shown on the installation (60119843) to the firewall or fender well of truck.

  • Page 14: D-4. Option-Solberg Air Filter Kit (51709435)

    DA425EA: 99900679: 19960708 REPAIR KITSGASKET KIT - 51039013 7Q072212 O-RING - CYL HEAD 76039092 GASKET-REAR BRG HSG .006 76039093 GASKET-PUMP COVER 76039094 GASKET-REAR BRG HSG .010 76039111 GASKET-CYL BLOCK BOTTOM 76039112 GASKET-FRT BRG HSG 76039113 GASKET-VALVE COVER 76039114 GASKET-CYL BLOCK TOP...

  • Page 15: Section 5. Repair

    DA425EA:99900679: 19951003 SECTION 5. REPAIR 5-1. GENERAL 5-2. PISTON RING REPLACEMENT CAUTION DO NOT LUBRICATE THE RINGS. USE A LIGHT NOTE LUBRICANT, SUCH AS WD-40 ONLY, ON THE CYLINDER A RUBBER FACED MALLET WILL HELP WHEN WALLS. OILING THE RINGS WILL PREVENT THEM REMOVING THE HEAD.

  • Page 16: Oil Pump Replacement

    DA425EA:99900679: 19951003 5-4. CRANKSHAFT AND BEARING REPLACEMENT NOTE INSTALL THE VALVE PLATE WITH THE MARKED SURFACE FACING UP. NOTE DEPENDING ON THE CONDITION OF THE CRANKSHAFT, BEARING MAY BE REPLACED WITHOUT REPLACING THE CRANKSHAFT. REPLACE THE BEARING RACES WHENEVER THE BEARINGS ARE REPLACED.

  • Page 17: Clutch Replacement

    DA425EA:99900679: 19951003 NOTE THE CRANKSHAFT SHOULD HAVE NEW BEARINGS INSTALLED. IF NOT, PRESS THE NEW BEARINGS INTO POSITION ON THE CRANKSHAFT. 5-5. CLUTCH REPLACEMENT CAUTION CLUTCH FAILURE MAY BE DUE TO A LEAKING CHECK VALVE. MAKE CERTAIN THAT THE CHECK VALVES ARE FUNCTIONING PROPERLY BEFORE INSTALLING THE NEW CLUTCH.

  • Page 18: Troubleshooting

    DA425EA:99900679: 19951003 5-6. TROUBLESHOOTING FIGURE E-5. TROUBLESHOOTING CHART...
  • Page 19 DA425EA:99900679:...
  • Page 20 DA425EA:99900679: LIMITED WARRANTY IOWA MOLD TOOLING CO., INC. BOX 189, GARNER, IA 50438-0189 TEL: 515-923-3711 TECHNICAL SUPPORT FAX: 515-923-2424...

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