Drive Pump Belt 6736775 Replacement for Bobcat Loader Powertrain

Matched Drive Train Set — belt, tensioner, and pulley verified as a system before dispatch to prevent early hydraulic pump wear.

Technical Specifications

Application Suitability

Why a Belt Failure Is Never Just a Belt

A torn or glazed drive pump belt 6736775 usually points to a deeper system fault that a simple swap will not cure.

In the Guangzhou warehouse, I have handled returns where the Drive Pump Belt engine rebuild replacement arrived with frayed edges after only a few hundred hours. Nearly every case traced back to a worn tensioner spring or a pulley with uneven groove wear that forced the belt to track off-center. When a rebuild shop replaces only the belt without inspecting the entire drive train, the new component inherits the same misalignment and fails prematurely [NEED_CITE: belt drive system alignment and tension standards for mobile hydraulic equipment]. Addressing the root cause at the system level is what separates a lasting repair from a repeat visit.

System-Level Thinking Behind Every Belt Shipment

The belt drive sits at the intersection of the engine and the hydraulic system. On Bobcat S-series and T-series loaders, the hydraulic pump draws substantial torque through this single belt path. Any slip or harmonic vibration transmits directly into the pump, accelerating internal wear on valve plates and piston slippers. Sourcing this drive pump belt as part of a matched engine-system service set ensures the tensioner, pulleys, and fasteners all arrive verified for the same loader variant, supporting a complete repair in one teardown cycle.

Matching Belt Grade to Engine Rebuild History

Engines that have been through previous overhauls may carry non-standard pulley diameters or aftermarket tensioner brackets that alter the effective belt path length. A standard-length belt on a modified drive path either runs too tight, loading the pump bearing, or too loose, allowing slip under peak hydraulic demand. Before confirming an order, we cross-check the engine serial number against the loader model to rule out variant differences. Shops that track rebuild history by engine serial avoid the mismatch entirely [NEED_CITE: engine serial variant tracking practices in compact loader rebuild shops].

Reading the Specs That Matter on the Shop Floor

The 58.15-inch length and 1.19-inch width define the physical envelope, but the cogged profile with three precision-molded grooves is what manages heat and grip. Cogging allows the belt to bend around smaller pulley radii without internal cracking, which matters on compact loaders where space limits pulley size. The fiber-loaded backing resists the surface heat generated during sustained pump loading, while the high-tensile cord reinforcement maintains dimensional stability so the belt does not stretch beyond the tensioner's adjustment range. Dimensional tolerance held within ±0.3 mm on length and width means the belt seats fully in the pulley grooves on every listed Bobcat model without shimming or modification.

The Real Cost of Skipping the System Check

When a shop fits a new belt without verifying pulley groove condition or tensioner spring force, the belt often shows edge wear within the first week. That means a second teardown, fresh labor hours, and another machine off the schedule. In our return records, belt-related callbacks almost always involve at least one adjacent component that was overlooked. The downtime compounds when the replacement belt is not in stock locally, forcing the machine to sit while a second shipment is arranged [NEED_CITE: unplanned downtime cost factors for compact construction equipment].

Why Engine Rebuild Shops Consolidate Here

Our own production lines and qualified sourced supply share the same QC and warranty terms, so a belt and its matching tensioner carry identical coverage under one account. Eight product categories mean a complete drive-train overhaul list ships as a single consignment from the Guangzhou warehouse, eliminating split freight. Minimum order is one piece, which suits both emergency single-belt orders and planned fleet stocking. Part identification works from the number, the machine model, a photograph, or a nameplate image. Cross-reference verification covers superseded and alternate numbers, and sample supply is available for fitment confirmation before any bulk commitment.

Documentation & Verification

• Commercial invoice and packing list referencing belt part number and quantity
• Part compatibility and cross-reference sheet marked 6736775 reference only
• Quality inspection record covering length, width, and groove dimensional checks
• Warranty terms stated at 3–12 months against manufacturing defects
• Packing photographs showing belt coil protection and carton labeling
• HS code and customs documentation support for international belt shipments

Installation & Rebuild Sequence

• Inspect all three pulley grooves for uneven wear before seating the new 58.15-inch belt
• Verify tensioner spring force against the loader service manual specification
• Align the belt within the ±0.3 mm tolerance window using a straight-edge check
• Torque pulley mounting bolts to manufacturer spec after belt seating
• Run the engine at idle for initial belt bedding before applying full hydraulic load
• Recheck belt tension after the first hour of operation to confirm stability

Before You Place the Order

Send us the Bobcat loader model, engine serial number, and any previous rebuild notes so we can confirm the correct belt variant and advise on matched tensioner and pulley components. If the nameplate is unreadable, a clear photograph of the old belt and pulley assembly works for identification. Our technical team reviews each inquiry against the machine compatibility list to prevent variant mismatches before the order is confirmed.

Frequently Asked Questions

Q: What other belt-drive components should be replaced together with this belt? A: On Bobcat loaders, the tensioner assembly and idler pulley should be inspected every time the belt is changed. Worn pulley grooves cause the new belt to track incorrectly and wear prematurely. We supply matched sets including the belt, tensioner, and pulleys so the entire drive path is renewed in one service event.

Q: How do I confirm the correct belt variant for my specific Bobcat engine serial number? A: Provide the engine serial number along with the loader model. Some Bobcat S-series and T-series units received different pulley configurations across production runs, which affects the required belt length and groove count. We cross-reference the serial against our compatibility records to confirm the exact variant before shipping.

Q: What pulley and tensioner conditions cause premature belt failure? A: Groove wear that creates a polished surface reduces grip, and a weakened tensioner spring allows slip under hydraulic load. Misaligned mounting brackets push the belt sideways, fraying the edges. Addressing these root causes during installation prevents the new belt from inheriting the same failure pattern.

Q: Can I order a matched set of belts, tensioners, and pulleys as one engine-system package? A: Yes. We consolidate belt-drive components from multiple categories into a single shipment under one warranty. Provide your full service list and we will confirm which items ship together from Guangzhou stock, reducing the risk of partial deliveries delaying your rebuild schedule.