Product Description
Bishamon BI 52103663 hydraulic unit compression spring designed for BS-55 series manual pallet jacks with 5500 lbs capacity. OEM replacement component for self-contained rebuildable hydraulic pump assembly supporting three-position lift control in equipment with 2.9 to 7.8 inch lift range across multiple fork configurations.
Compatibility: Fits pallet jacks made by Bishamon, model BS-55. Alternate model: BS55; BS 55. SKU: BI 52103663
Specifications
Part Numbers & Compatibility
| OEM Part Number | BI 52103663 |
| Equipment Compatibility | Bishamon BS-55 series manual pallet jack hydraulic unit |
| Compatible Models | BS-55A, BS-55B, BS-55C, BS-55D, BS-55E, BS-55F, BS-55G, BS-55H |
Frequently Asked Questions
Q: What is the BI 52103663 compression spring designed for?
A: The BI 52103663 is a hydraulic unit compression spring engineered for the Bishamon BS-55 series manual pallet jack. It is a core component in the self-contained rebuildable hydraulic pump assembly that manages lift control, load holding, and pressure relief across the three-position control range.
Q: Which BS-55 pallet jack models use the BI 52103663 compression spring?
A: The BI 52103663 is compatible with all BS-55 series variants: BS-55A, BS-55B, BS-55C, BS-55D, BS-55E, BS-55F, BS-55G, and BS-55H. These models share the same 5500 lb capacity hydraulic unit design.
Q: What lift range do BS-55 pallet jacks equipped with the BI 52103663 achieve?
A: Bishamon BS-55 series pallet jacks with the BI 52103663 compression spring support a lift range of 2.9 to 7.8 inches depending on fork configuration. This range accommodates standard and low-profile pallet designs across multiple material handling scenarios.
Q: What happens if the BI 52103663 spring becomes weak or broken?
A: A weakened or broken BI 52103663 compression spring results in loss of spring pressure in the hydraulic pump assembly. This causes the pallet jack to lose lift control, drop loads uncontrollably, or fail to maintain raised height. Immediate replacement is necessary for safe operation.
Q: Is the BI 52103663 an OEM Bishamon component?
A: Yes, the BI 52103663 is an OEM Bishamon part. The OEM part number is BI 52103663. This is the original specification compression spring for BS-55 series hydraulic units with 5500 lb capacity across all model variants.
Q: In what maintenance scenarios do you replace the BI 52103663 spring?
A: Replace the BI 52103663 spring during full hydraulic unit rebuild, when the pallet jack loses lift control, during overhaul if spring tension is visibly compromised, or as part of preventive maintenance on high-use equipment. Springs typically last 5 to 10 years depending on cycle frequency and load profile.