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| Parameter | Value / Specification |
|---|---|
| Maximum Operating Pressure | Up to 4,350 PSI (300 bar) |
| Temperature Range | -40°F to 225°F (-40°C to 107°C) |
| Fluid Compatibility | Mineral-based hydraulic oils, Komatsu Super Hydraulic Fluid (KSHV), BIO HFDU fluids |
| Primary Seal Materials | Polyurethane (AU/TPU), Nitrile Rubber (NBR), PTFE, FKM (select applications) |
| Seal Hardness (Dynamic) | 88-94 Shore A (as specified per component) -1 |
| Seal Hardness (Static) | 70-90 Shore A (NBR O-Rings) -1 |
| Quality Standard | Manufactured to meet or exceed Komatsu OEM specifications and dimensional accuracy -1 |
| Komatsu Equipment Model | OEM Part Number | Cylinder Application | Reference |
|---|---|---|---|
| Komatsu D61EX-12 Crawler Dozer | 707-99-35170 | Angle (PAT) Cylinders | -1 |
| Komatsu D61PX-12 Crawler Dozer | 707-99-35170 | Angle (PAT) Cylinders | -1 |
| Note: | This kit is a direct replacement for Komatsu OEM part number 707-99-35170. It is designed specifically for the ANGLE (PAT) CYLINDERS on the D61EX-12 and D61PX-12 dozer models. Always verify your machine's model and serial number before installation. |
| Component Name | Material Specification | Color | Hardness | Manufacturer Reference | Function |
|---|---|---|---|---|---|
| Rod Seals | Urethane (TPU) | Ivory / Blue / Gray | 90-94 Shore A | NOK, SKF, H605 equivalent -1 | Primary rod sealing |
| Buffer Seals | Urethane (TPU) | Ivory / Blue / Gray | 90-94 Shore A | NOK, SKF, H605 equivalent -1 | Pressure spike protection |
| Piston Seals | Urethane + PA/PTFE | Ivory/Purple/Brown/Blue/Yellow | 88-92 Shore A | JSPSEAL design -1 | Main dynamic pressure seal |
| Wipers | Urethane/NBR with Metal | Brown / Blue / Yellow | 85-90 Shore A | JSPSEAL design -1 | Contaminant exclusion |
| Wear Rings | Urethane+Metal / NBR+Metal | Brown / Green / Gold | N/A | JSPSEAL design -1 | Piston/rod guidance |
| Backup Rings | PTFE+Bronze / NBR+PA/Nylon | Black / White / Brown | N/A | JSPSEAL design -1 | Anti-extrusion protection |
| O-Rings | Nitrile Rubber (NBR) | Black | 90 Shore A | JIS B2401 | Static sealing |
| Special Seals | As per OEM design | Various | As specified | OEM configuration | Application-specific sealing |
Complete set of rod seals and buffer seals – Qty: As per OEM configuration
Piston seals – Qty: As required for angle cylinder configuration
Heavy-duty wipers/scrapers – Qty: 2 (per cylinder, typical)
Wear rings / guide bands – Qty: As required
Comprehensive O-ring assortment (JIS metric sizes) – Qty: 1 Set
Backup rings for high-pressure applications – Qty: As required
Note: This kit contains a complete seal profile set specifically configured for the angle (PAT) cylinders on D61EX-12/D61PX-12 dozers. Contents match the OEM 707-99-35170 kit configuration. A detailed exploded diagram is included for correct assembly -1.
Full complement of seals for complete angle cylinder rebuild
All static and dynamic seals as specified in OEM bill of materials
JIS metric O-ring sizes matching Japanese industrial standards
Excluded Items: This kit contains seal and wear component only. Pistons, rods, barrels, gland nuts, bearings, bolts, pins, and other metal parts are not included.
Installation decomposition diagram
Application Verification: Confirm 707-99-35170 is the correct kit for your D61EX-12 or D61PX-12 angle cylinders.
System Depressurization: Park the dozer on level ground. Lower the blade fully to relieve all hydraulic pressure. Engage parking brake and block tracks securely.
Clean Work Environment: Maintain surgical cleanliness throughout the repair process. Dozer environments are highly abrasive; contamination control is essential -1.
Documented Disassembly: Carefully disassemble the angle cylinder. Photograph and note the exact order and orientation of all components, especially the seal stack in the gland.
Component Identification: Use the included packing list and machine service manual to identify correct seals for each location.
Critical Metal Inspection: Thoroughly inspect the cylinder rod for scratches, gouges, or corrosion. Check the cylinder bore for scoring, pitting, or excessive wear. Damaged metal components must be reconditioned or replaced prior to seal installation -1.
Lubricated Assembly: Soak all new elastomeric seals in clean hydraulic fluid. Lightly lubricate all seal grooves and sliding surfaces before installation.
Proper Seal Placement: Ensure precise alignment when installing each seal and component from the kit -1.
Torque Compliance: During reassembly, use a calibrated torque wrench. Follow Komatsu D61EX-12/D61PX-12 service manual specifications for all fasteners.
System Testing: After assembly, perform a pressure test to validate seal integrity and system functionality before returning to service -1.
Frequently Asked Questions
A. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?
A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.
A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.
A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?
A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.)，Sometimes we will arrange as the customer's demand.
A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.
A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.
A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
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