Drive Pump Belt 6736775 for Bobcat 753 S130-S205 – Fleet Supply

Replacement Cycle Planning — drive pump belt wear tracked across 753 and S-series service logs to schedule changes before hydraulic failure.

Technical Specifications

Application Suitability

Why Fleets React Instead of Planning Drive Pump Belt Service Intervals

Most belt failures on Bobcat loaders happen because nobody wrote the replacement date into the maintenance calendar.

I spent years watching machines sit idle on desert job sites after a drive pump belt snapped mid-shift. The 6736775 belt uses a quiet variable cog design that hides wear well — no obvious squealing until the cord structure gives way. By then the hydraulic drive is dead and the whole crew stops [NEED_CITE: preventive maintenance scheduling for mobile hydraulic equipment]. Fleet managers often treat this belt as an emergency part rather than a predictable wear item, and the cumulative downtime across a multi-unit fleet becomes a serious budget leak.

Where This Belt Sits in the Bobcat Service Life

A drive pump belt is the single link between engine output and hydraulic function on these loaders. When it fails, the machine does not just lose one attachment — it loses all hydraulic movement. On machines like the S185 and S205 that run high-hour shifts, the belt belongs in the same preventive category as hydraulic filters and engine oil. Treating it as a run-to-failure component means accepting that every replacement will happen under pressure, with the machine already down and a crew waiting.

Recognizing Wear Before the Belt Breaks

Fiber-loaded backing and cord-reinforced construction give this belt a long service window, but they also mask deterioration. Small cracks along the cog roots, slight glazing on the groove contact faces, and a faint chirp at startup are all late-stage signals. On T-series track loaders working in abrasive dust, the grooves wear from particulate ingress rather than fatigue [NEED_CITE: belt wear mechanisms in high-dust construction environments]. Checking the belt at each hydraulic filter change gives a consistent inspection rhythm without adding separate downtime.

What the Variable Cog and Groove Profile Mean in Practice

The three-groove variable cog design distributes load across a wider pulley contact area, which reduces peak stress on individual cords during sudden hydraulic load spikes. The 58.15-inch length and 1.19-inch width must match the pulley spacing exactly — a belt even one groove profile off will ride high and slip under load. The fiber-loaded backing resists stretching over long service intervals, which is what keeps tension stable between scheduled checks. These are the specifications that determine whether a replacement belt survives its first full shift on a rental unit.

The Accumulated Cost of Reactive Belt Purchasing

Every unplanned belt failure on a loader means the machine is already non-productive when the purchase order gets raised. Rush freight, overtime labor for the mechanic, and idle operator wages stack on top of the part cost. On a fleet running multiple S-series and T-series units, these incidents repeat across different machines at different times, preventing any consolidated stocking strategy [NEED_CITE: total cost of unplanned downtime in earthmoving fleets]. Over a two-year period the reactive approach consistently costs more than keeping two or three belts in fleet stock.

Why Fleet Buyers Source This Belt Here

We keep production and qualified sourcing under one warranty account, so whether the belt comes from our line or a partner facility the quality terms are identical. Our catalog spans eight equipment categories, meaning a fleet service order can include belts, filters, seal kits, and undercarriage parts on a single commercial invoice. Minimum order starts at one piece for emergency needs, but we also support planned bulk stocking aligned with your service interval forecasts. Cross-reference verification covers superseded numbers across older 753 and newer S-series models. A technical team is available to confirm the correct length and groove count when the machine nameplate is faded or painted over. Sample belts can ship ahead of a bulk commitment so your workshop can verify fitment on the actual pulley set.

Documentation & Verification

• Commercial invoice listing belt part number and quantity per machine model
• Cross-reference sheet mapping superseded belt numbers for 753 and S-series (reference only)
• Dimensional inspection record confirming length, width, and groove count before dispatch
• Warranty terms covering manufacturing defects for 3 to 12 months
• Packing photographs showing belt condition and coil protection at time of packing
• HS code and customs paperwork for international fleet supply shipments

Service Interval & Stocking Guidance

• Replace drive pump belt 6736775 at intervals recommended by your fleet maintenance schedule or at first sign of cog cracking
• Inspect pulleys and tensioner bearings at every belt change — worn pulleys accelerate new belt wear
• Stock one belt per machine in active fleet plus a shared buffer for rental turnaround units
• Store belts away from direct sunlight, ozone sources, and temperatures above ambient to preserve backing integrity
• Record replacement date and machine hours to build a wear history for each unit in the fleet

Request a Fleet Stocking Proposal

Send us your fleet list with machine models, serial numbers, and current operating hours. We will map the correct belt variant for each unit and propose a stocking quantity aligned with your service intervals.

Frequently Asked Questions

Q: How often should the drive pump belt be replaced on a Bobcat loader?
A: Replacement timing depends on operating hours and environment. On S-series loaders in standard construction use, inspection at every hydraulic filter change is a practical rhythm. High-dust or high-temperature sites may need shorter intervals. We recommend recording each replacement with machine hours to build a unit-specific wear history that guides future scheduling.

Q: What signs indicate the belt needs replacing before it breaks?
A: Look for small cracks along the cog roots, glazing on the groove contact faces, and any chirping sound at engine startup. Fiber-loaded backing hides internal cord fatigue, so visual inspection alone can miss late-stage wear. If the belt shows any of these signs, schedule replacement during the next planned service window rather than waiting for failure.

Q: Should pulleys and tensioners be replaced when the belt is changed?
A: Not every time, but they should be inspected at each belt change. Worn pulley grooves or a weak tensioner will cause the new belt to slip and wear prematurely. On older 753 units with high accumulated hours, replacing the tensioner alongside the belt is often the more economical choice to avoid a second teardown.

Q: How many belts should a rental fleet keep in stock?
A: A practical baseline is one belt per active machine plus two or three shared spares for turnaround inventory. Rental fleets benefit from stocking ahead because units return on unpredictable schedules and a belt failure during turnaround delays the next rental contract. We can help calculate quantities based on your fleet size and utilization data.

Q: Can older Bobcat models still be supplied with this belt?
A: Yes. The 753 and early S-series models remain in service on many job sites, and we continue to supply compatible belts for these machines. Cross-reference verification covers superseded part numbers, so even if your original manual lists an older number we can confirm the current equivalent for your specific machine serial range.