Ingersoll Rand literature · Parts list
Ingersoll Rand SS350GB20R83-32GF and SS350GE20R83-32GF Starter Testing and Parts Manual (P7121)
A short model-specific manual for two SS350 gas-capable vane starters, the B-ratio SS350GB20R83-32GF and the E-ratio SS350GE20R83-32GF. It opens with safety warnings and warning-label explanations, gives a six-step bench test for a rebuilt starter, and then provides a cross-section drawing, an exploded drawing and the complete numbered parts list including the SS350-TK2 tune-up kit. Full installation and maintenance instructions are in a separate form, P6633.
Document at a Glance
- Publisher
- Ingersoll Rand
- Document type
- Parts list
- Form / number
- Form P7121, No. 03540036, Edition 1
- Language
- English
- Pages
- 8
- File
- PDF, 609 KB
What's in This Document
| Section | Pages | What it covers |
|---|---|---|
| Important safety information | 1 | Warnings about pressure rating, gas operation, lubricants and use of genuine parts. |
| Warning label identification | 2 | Explains the four warning labels on the starter (eye and hearing protection, air shut-off, hose condition). |
| Testing the starter | 3 | Six-step bench test covering clutch ratcheting, gearing freeness, pinion engagement and travel, motor run and seal checks. |
| Maintenance section: cross-section drawing (Dwg. TPA1401) | 4 | Sectional view of the assembled starter with item numbers. |
| Maintenance section: exploded drawing (Dwg. TPA1397) | 5 | Exploded view keyed to the parts list item numbers. |
| Parts list (part number for ordering) | 6-7 | Item-by-item ordering numbers, with B and E ratio variants, rotation variants and tune-up kit parts flagged. |
Key Specifications and Data
| Item | Value | Page |
|---|---|---|
| Pinion engagement test pressure (IN port) | 50 psig (3.4 bar / 345 kPa) | 3 |
| Engagement leak check pressure (OUT port plugged) | 150 psig (10.3 bar / 1034 kPa) | 3 |
| Extended pinion face to mounting flange face | 2.75 in (70.0 mm ± 1.5 mm) | 3 |
| Pinion travel to solid stop (difference between readings) | .47 in (12.0 mm ± 0.9 mm) | 3 |
| Retracted pinion face to mounting flange face | 1.82 in (46.2 mm ± 1.5 mm) | 3 |
| Motor run test | 90 psig (6.2 bar / 620 kPa) through a 3/8 in (9 mm) hose | 3 |
| Motor seal test | 30 psig (2.1 bar / 207 kPa), exhaust plugged, immersed 30 seconds in non-flammable solvent | 3 |
| Rotation designation | R in the model number = right-hand; pinion turns clockwise when viewed facing the pinion | 3 |
| Vane packet | Set of 5 vanes | 6 |
| Gear ratio variants | B ratio and E ratio (separate rotor pinion, rotor pinion screw and drive gear) | 6 |
Gear-ratio-specific parts
| Part | B ratio | E ratio |
|---|---|---|
| Rotor pinion | SS350B-17 | SS350E-17 |
| Rotor pinion retaining screw | SS350B-732 | SS350E-732 |
| Drive gear | SS350B-9 | SS350E-9 |
Models Covered
Model codes as printed in the document. Linked codes go to the matching Ingersoll Rand starter in our catalog.
SS350GB20R83-32GF SS350GE20R83-32GF
Service Kits and Part Numbers
| Part number | Description | Page |
|---|---|---|
| SS350-TK2 | Tune-up kit (items 8 [2], 12 [2], 18, 20, 24, 27, 28, 32, 36, 49, 51, 53) | 7 |
| SS350-A102 | Motor housing cover assembly | 6 |
| SS350R-12 | Rear end plate with rear rotor bearing, right-hand rotation models | 6 |
| SS350L-12 | Rear end plate with rear rotor bearing, left-hand rotation models | 6 |
| SS350-24 | Rear rotor bearing | 6 |
| SS350-67 | End plate O-ring | 6 |
| SS350-K3 | Cylinder housing kit | 6 |
| SS350-11 | Front end plate | 6 |
| SS350-53A | Rotor | 6 |
| AM-318 | Front rotor bearing | 6 |
| SS350-42-5 | Vane packet (set of 5 vanes) | 6 |
| SS350B-17 | Rotor pinion, B ratio | 6 |
| SS350E-17 | Rotor pinion, E ratio | 6 |
| SS350-37-03 | Gear case | 6 |
| SS350B-9 | Drive gear, B ratio | 6 |
| SS350E-9 | Drive gear, E ratio | 6 |
| SS350-359 | Drive gear bearing | 6 |
| SS350-270 | Gear case seal | 6 |
| SS350-K703 | Piston kit | 6 |
| SS350R-583 | Clutch spring | 6 |
| SS350-367A | Clutch spring cup | 6 |
| SS350R-8 | Drive shaft | 6 |
| SS350R-13-83 | Drive pinion | 7 |
| SS350A-300 | Drive housing assembly | 7 |
| SS175-301-20 | Drive housing flange | 7 |
| SS350-271 | Drive housing seal | 7 |
| SS350-363 | Drive housing bearing | 7 |
| SS350-245 | Drive housing gasket | 7 |
Confirm part numbers against the serial and model plate of your starter. For any part not listed in our catalog, send us the number.
Bench testing a rebuilt starter (Overview)
- Turn the drive pinion by hand in the rotation direction; the clutch should ratchet smoothly with a light clicking.
- Turn the pinion the opposite way; gearing and motor should spin freely without binding.
- Apply 50 psig to the IN port on the drive housing; the pinion should extend and air should exit the OUT port.
- Plug the OUT port, apply 150 psig to the IN port, confirm no leakage, and measure pinion position extended, at the solid stop and retracted against the listed dimensions.
- Feed 90 psig to the motor inlet through a 3/8 in hose; the motor should run smoothly.
- Plug the exhaust, apply 30 psig to the motor inlet and submerge the starter in non-flammable solvent for 30 seconds; no bubbles should appear.
An outline only. Follow the full procedure, torque values and safety warnings in the document (from page 3).
Frequently Asked Questions
What is the difference between the SS350GB20R83-32GF and SS350GE20R83-32GF?
They differ in gear ratio: the GB model uses the B-ratio rotor pinion, rotor pinion screw and drive gear, while the GE model uses the E-ratio versions. The rest of the parts list is shared.
What tune-up kit fits the SS350GB20R83-32GF and SS350GE20R83-32GF starters?
The parts list gives SS350-TK2, which covers the O-rings, front rotor bearing, vane packet, gear case O-ring, bearing retaining ring, gear case seal, piston O-ring, clutch jaw retaining ring and the drive housing seal, O-ring and gasket.
What pressures are used to test a rebuilt SS350 starter?
The test uses 50 psig and 150 psig on the engagement IN port, 90 psig at the motor inlet for a run check, and 30 psig with the exhaust plugged for a solvent-immersion seal check.
What does the R in SS350GB20R83 mean?
An R in the model number designates right-hand rotation, meaning the drive pinion turns clockwise when you face it.
Where are the full installation instructions for these models?
The manual refers to Form P6633 for detailed installation and maintenance information.
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 P7121, No. 03540036, Edition 1. 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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