Ingersoll Rand literature · Installation & maintenance manual
Ingersoll Rand Series SS175 and SS350 Starters Installation and Maintenance Manual (Form P6633)
The Ingersoll Rand installation and maintenance manual for the SS175 and SS350 vane starters, which are built for air or gas operation. It explains lubrication, installation and hose sizing, reorientation, plumbing and mounting with torque values, HDL2 lubricator installation, full disassembly, inspection and reassembly of motor, gear case, clutch and drive housing, troubleshooting, and a bench test sequence. Parts lists for both series, a drive pinion selection chart, the model number key and an accessories list complete the manual.
Document at a Glance
- Publisher
- Ingersoll Rand
- Document type
- Installation & maintenance manual
- Form / number
- Form P6633, No. 03532561, Edition 3, June 1988
- Language
- English
- Pages
- 20
- File
- PDF, 2.3 MB
What's in This Document
| Section | Pages | What it covers |
|---|---|---|
| Operating limits and gas operation | 1 | Pressure limits and precautions for gas-operated starters, including testing after reassembly. |
| Lubrication | 2 | Lubricant by temperature and the choice between HDL2 and an air line lubricator based on cranking time. |
| Installation and orientation | 2-3 | Hose versus pipe, supply line sizes, leak-free connections, exhaust-down mounting and reorienting the housings. |
| Mounting the air starter | 3-4 | Relay valve, control valve, gauge and hose installation, bolt torques and muffler or deflector selection. |
| Installation of HDL2 lubricator | 4 | Mounting on the starter or remotely and connecting to fuel return line, fuel tank or a separate reservoir. |
| Disassembly | 4-6 | Step order for the drive housing, piston and clutch, gear case and motor. |
| Cleaning and inspection | 6 | What to wash, what not to wash, and wear checks for bearings, clutch jaws and vanes. |
| Assembly | 6-9 | Motor, gear case, piston and drive shaft, drive housing and final assembly with clearances and torques. |
| Piping diagrams | 12 | Typical vehicular and stationary installations. |
| Parts lists and drive pinion chart | 15-17 | Repair parts for SS175 and SS350 and the pinion number for each starter model. |
| Troubleshooting and model number key | 18-19 | Causes and fixes for power loss, leakage and engagement faults, and how to read the model code. |
| Testing the starter and accessories | 20 | Six-step bench test with pressures and pinion travel dimensions, plus the accessory part list. |
Key Specifications and Data
| Item | Value | Page |
|---|---|---|
| Minimum operating pressure | 70 psig (4.8 bar / 483 kPa) | 1 |
| Maximum operating pressure | Pressure rating stamped on the nameplate | 1 |
| Gear ratios | B = 2:1, E = 3:1 | 19 |
| Lubricant above 32 F (0 C) | SAE 10 non-detergent motor oil | 2 |
| Lubricant below 32 F (0 C) | Diesel fuel | 2 |
| Air line lubricator setting (cranking over 10 s) | 1 to 2 drops per second | 2 |
| Mounting bolt torque, 5/8 in bolts | 90 ft-lb (122 Nm) | 3 |
| Mounting bolt torque, 3/8 in bolts | 30 ft-lb (41 Nm) | 3 |
| Drive housing and motor housing cover cap screws | 20 ft-lb (27 Nm) | 3 |
| Rotor pinion, drive shaft and drive pinion retaining screws | 55 ft-lb (74 Nm) | 8 |
| Rear rotor bearing retaining nut clamping screw | 10 in-lb (1.1 Nm) | 7 |
| Rear end plate to rotor clearance | 0.002-0.005 in (0.05-0.13 mm) | 7 |
| HDL2 oil inlet fitting torque | 15 to 36 ft-lb (20.3 to 48.8 Nm) | 4 |
| Gear grease at assembly | About 150 cc of Ingersoll Rand Grease No. 28 | 9 |
| Clutch jaw travel | 15/32 in (12 mm) | 9 |
| Vane replacement limit | Width 0.67 in (17 mm) or less at either end | 18 |
| Pinion extended / retracted distance to flange face | 2.75 in (70.0 mm +/- 1.5) / 1.82 in (46.2 mm +/- 1.5) | 20 |
| Seal leak test | 30 psig (2.1 bar / 207 kPa), immersed 30 seconds | 20 |
| Drive housing / inlet positions | 8 radial positions / 4 radial positions | 2 |
Recommended supply hose or pipe size
| Starter | Line up to 30 ft | Line over 30 ft |
|---|---|---|
| SS175 | 1 in | 1-1/4 in |
| SS350 | 1-1/4 in | 1-1/2 in |
Model number key (example SS350 G E 03 L 32)
| Position | Code | Meaning |
|---|---|---|
| Frame size | SS175 / SS350 | Basic model |
| Gas sealing | G | Sealed for gas operation |
| Gear ratio | B | 2:1 |
| Gear ratio | E | 3:1 |
| Mounting | 01 | SAE 1 flange |
| Mounting | 03 | SAE 3 flange |
| Rotation facing pinion | R | Clockwise |
| Rotation facing pinion | L | Counterclockwise |
| Pinion | two digits | Suffix of the pinion part number |
| Orientation | three characters | Inlet, exhaust and control inlet positions |
Drive pinion part numbers listed in the pinion charts
| Pinion number | Pinion code in model | Rotation |
|---|---|---|
| SS350R-13-15 | 15 | R |
| SS350R-13-21 | 21 | R |
| SS350R-13-29 | 29 | R |
| SS350R-13-31 | 31 | R |
| SS350L-13-32 | 32 | L |
| SS350R-13-37 | 37 | R |
| SS350R-13-38 | 38 | R |
| SS350R-13-77 | 77 | R |
| SS350R-13-83 | 83 | R |
| SS350R-13-85 | 85 | R |
| SS350R-13-99 | 99 | R |
Models Covered
Model codes as printed in the document. Linked codes go to the matching Ingersoll Rand starter in our catalog.
SS350GE03R31-1707 SS350GE03R31-1552 SS350GE03R29-1587 SS350GE03L32-1513 SS350GE03L32-1550 SS350GE03R31-00L SS350GE03R31-01D SS350GE03R31-02A SS350GE03R31-02B SS350GE03R31-02F SS350GE03R31-02G SS350GE03R31-02L SS350GB03R31-02H SS350GE03R29-02B SS350GE03R29-02F SS350GE03R29-03J SS350GE03R21-02H SS350GE03L32-03G SS350GE03R85-02H SS350GB01R99-00D SS175GE03R15-00H SS175GE03R29-02H SS175GE03R37-02F SS175GE03R37-02H SS175GE03R77-02H SS175GE03R85-02H SS175GE01R99-00D
Service Kits and Part Numbers
| Part number | Description | Page |
|---|---|---|
| SS175-TK2 | Tune-up kit, SS175 | 15 |
| SS175-A102 | Motor housing cover assembly, SS175 | 15 |
| SS350R-12 | Rear end plate with rear rotor bearing, right-hand models | 15 |
| SS350L-12 | Rear end plate with rear rotor bearing, left-hand models | 15 |
| SS350-24 | Rear rotor bearing | 15 |
| SS175-K3 | Cylinder housing kit, SS175 | 15 |
| SS175-53 | Rotor, SS175 | 15 |
| AM-318 | Front rotor bearing | 15 |
| SS175-42-5 | Vane packet (set of 5 vanes), SS175 | 15 |
| SS350B-17 | Rotor pinion, B ratio models | 15 |
| SS350E-17 | Rotor pinion, E ratio models | 15 |
| SS350-37-03 | Gear case | 15 |
| SS350B-9 | Drive gear, B ratio models | 15 |
| SS350E-9 | Drive gear, E ratio models | 15 |
| SS350-K703 | Piston kit | 15 |
| SS350R-K587 | Clutch jaw kit (both jaws and bearing), right-hand models | 15 |
| SS350R-8 | Drive shaft, right-hand models | 15 |
| SS350L-8 | Drive shaft, left-hand models | 15 |
| SS350-K300-01 | Drive housing kit, SAE 1 flange | 15 |
| SS350-K300-03 | Drive housing kit, SAE 3 flange | 15 |
| SS350-363 | Drive housing bearing | 15 |
| SS175-A735 | Road splash deflector for SS175 | 3 |
| SS350-A674 | Muffler for SS350 | 3 |
| SS350-A735 | Road splash deflector for SS350 | 3 |
| SRV125 | 1-1/4 in relay valve | 20 |
| K4U-A267AT | 1-1/4 in air strainer | 20 |
| HDL2 | Lubricator | 20 |
Confirm part numbers against the serial and model plate of your starter. For any part not listed in our catalog, send us the number.
Testing the starter (Overview)
- Turn the drive pinion by hand in the starter's rotation; the clutch should ratchet smoothly with a light click.
- Turn it the opposite way; gearing and motor should spin freely.
- Apply 50 psig (3.4 bar) to the drive housing IN port; the pinion should move out and air should leave the OUT port.
- Plug OUT, apply 150 psig (10.3 bar) to IN, confirm no leakage and check pinion position and stroke against the stated dimensions.
- Run the motor on 90 psig (6.2 bar) through a 3/8 in hose; it should run smoothly.
- Plug the exhaust, apply 30 psig (2.1 bar) to the inlet and submerge for 30 seconds; no bubbles means it is sealed.
An outline only. Follow the full procedure, torque values and safety warnings in the document (from page 20).
Installing the HDL2 lubricator (Overview)
- To mount on the starter, replace one 3/8 in pipe plug in the motor housing cover with the HDL2; for remote mounting use the U-bolts and base clamp.
- For a remote unit, run 1/4 in hose from the lubricator to a 3/8 in tapped hole in the motor housing cover.
- Run a No. 6 hose from the lubricator oil inlet to the unpressurized fuel line, diesel tank or a separate reservoir, keeping the joint vacuum tight and free of sealant.
- Fill the oil supply line by hand before first use; a separate reservoir takes diesel fuel or SAE 10 / 10W non-detergent oil.
An outline only. Follow the full procedure, torque values and safety warnings in the document (from page 4).
Frequently Asked Questions
What is the minimum air pressure for SS175 and SS350 starters?
The manual says not to run them below 70 psig (4.8 bar), and not above the pressure stamped on the nameplate.
What hose size do SS175 and SS350 starters need?
SS175: 1 in for lines up to 30 ft, 1-1/4 in beyond that. SS350: 1-1/4 in up to 30 ft and 1-1/2 in for longer runs.
How do I read an SS350 model number such as SS350GE03L32?
SS350 is the frame size, G means sealed for gas, E is the 3:1 gear ratio (B is 2:1), 03 is an SAE 3 flange, L is counterclockwise rotation and 32 is the pinion suffix; further characters give port orientation.
When should SS175 or SS350 vanes be replaced?
Replace the set if any vane is separated, cracked or spalled, or worn to 0.67 in (17 mm) or narrower at either end; the manual also recommends new vanes at every teardown.
What are the mounting bolt torques for SS175 and SS350 starters?
90 ft-lb (122 Nm) for 5/8 in bolts and 30 ft-lb (41 Nm) for 3/8 in bolts.
Need the parts or the starter in this document? Send the model number from your starter's plate and we will confirm the right Ingersoll Rand part or replacement.
Source: Ingersoll Rand, Form P6633, No. 03532561, Edition 3, June 1988. Summary and tables prepared by AirStartersDirect.com, an authorized Ingersoll Rand air starter distributor; the PDF is the authoritative version. Page numbers refer to the PDF file. Reviewed October 2026.
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