8000 lb Topwind Square Trailer Jack | LF971B-701513

Authoritative LF971B-701513 Product Data

Publish the Rating as an 8,000 lb Capacity

For that reason, this page does not borrow the lift/support split used by visually similar 8,000 lb market products. The actual load at the jack position and the trailer-side structure still need to be checked as part of application approval.

Outer, Mid and Inner Tubes Are All Specified as Zinc Plated

The specification identifies three distinct tube stages rather than a simple two-tube construction. This matters for sourcing because sliding interfaces, dimensional control and coating condition all influence how the telescoping assembly operates.

The finish description confirms zinc plating, but it does not define coating thickness, passivation, sealing or a salt-spray acceptance value. Those requirements should be added to the RFQ when the service environment makes them important.

The Crank Envelope Sits Above the Jack Body

Topwind operation requires usable overhead and radial clearance around the crank. Nearby bodywork, deck structure, rails or fixed accessories should not block the operating arc.

This makes topwind geometry a real fit variable, especially on higher-capacity square jacks whose mounting area and surrounding trailer structure may already be crowded.

15 in Travel, 13 in Bracket Height and 28 in Extended Height

These are three separately published dimensions. They should be checked against the same measurement references used on the trailer drawing or physical installation before an OEM or replacement decision is finalized.

Real Product Images Show a Large Square Body and Multi-Hole Mounting Plate

The square body and broad side plate place LF971B-701513 in a different installation class from lighter round-tube tongue jacks. The plate visibly includes multiple mounting holes, but the current text specification does not define the exact hole spacing, fastener set or attachment procedure.

OEM buyers should therefore match the current production drawing to the trailer frame and load path rather than assuming interchangeability from appearance alone.

Specify the Zinc System by Environment, Not Appearance Alone

Zinc plating is verified on the outer, mid and inner tubes. That is useful product information, but the words “zinc plated” alone do not establish coating thickness, passivation type, sealing system or a guaranteed marine-service life.

For procurement teams defining wet, coastal or salt-exposed requirements, GOODIN's corrosion-resistant marine trailer hardware guide explains why electroplated zinc, hot-dip galvanizing, zinc-nickel and stainless components should be specified by component and service environment.

Six Checks Before Approving LF971B-701513

Questions Specific to LF971B-701513

Real Production Visibility for B2B Sourcing

These photographs show GOODIN's actual production environment and in-process trailer-jack components.

GOODIN Trademark Registrations in Overseas Markets

GOODIN maintains trademark registrations in selected overseas markets. Registration images are presented in a privacy-protective format.

Australia

United Kingdom

European Union

Confirm LF971B-701513 Against Your Heavy-Trailer Program

Send GOODIN the actual jack-position load, mounting drawing, working-height requirement, topwind clearance, ground conditions, coating requirement, quantity and destination market. For non-standard geometry or sourcing requirements, review our customized trailer jack options.

Higher-Capacity Manual Front Support with a Compact 13–28 in Height Window

LF971B-701513 is intended for compatible trailer applications that require an 8,000 lb-capacity manual support jack, topwind operation and a square telescoping structure.

Application approval should combine actual supported load, trailer-side structure, required working height, top-crank access, footplate conditions and service environment.

Real LF971B-701513 reference for installation and support-duty review.

Coupling Height, Uncoupled Support and Controlled Vertical Adjustment

A High Capacity Still Needs the Correct Height Range

LF971B-701513 publishes 15 in travel, 13 in bracket height and 28 in extended height. Compare these values with the installed reference and the lowest/highest positions required during coupling, uncoupling and parked support.

An 8,000 lb capacity does not compensate for a height range that cannot reach the real operating positions.

Design the Installation Around the Upper Crank Arc

Topwind operation places the handle movement above the square body. The final installation must leave sufficient space around rails, decks, frame structure or fixed accessories.

Operator access should be checked in the real working position rather than judged only from the uninstalled jack.

The 8,000 lb Jack and Trailer-Side Structure Must Be Evaluated Together

The real product images show a substantial side mounting plate with multiple holes. That visible architecture does not define the approved fasteners, hole spacing or frame reinforcement by itself, so current GOODIN drawings should control the installation decision.

Real mounting-area view for load-path and frame-interface review.

Fixed-Foot Support Depends on Surface Stability

The real product images show a broad fixed footplate. The supporting surface should remain firm and stable under the actual load, without allowing the plate to sink, slide or bear on an unsuitable local edge.

Pads or engineered support surfaces may be appropriate when required by the trailer or site procedure; the jack's capacity number does not remove the need for stable ground contact.

Three Zinc-Plated Sliding Stages Need Environment-Specific Procurement Requirements

Outer, mid and inner tubes are all specified as zinc plated. If the jack will see frequent moisture, road salt or coastal exposure, coating acceptance and maintenance should be defined more precisely than the generic finish name.

GOODIN's corrosion-resistant trailer hardware guide explains the difference between electroplated zinc and other protection systems without treating every zinc-coated component as equivalent.

LF971B-701513 is a trailer support jack; an 8,000 lb capacity does not make every lifting or stabilizing operation permissible.

For a clear explanation of why lifting, supporting and stabilizing are different mechanical jobs, see GOODIN's RV Leveling vs Stabilizing guide. The same principle applies broadly: the component rating and the approved structural load path must match the intended operation.

Information to Send Before Approving LF971B-701513

Provide actual supported load, trailer frame and mounting drawing, required working heights, topwind clearance, ground conditions, operating frequency, environmental exposure, coating acceptance requirements, quantity and destination market.