Part of the Kubota Operator Manuals.
This Kubota operator manual covers the GR2700B and GR2704A driveline connector kit and front implement setup (publication OM 0414QH-A), for units from serial 21303175 and up. Its 36 pages cover safety, assembling the Fun/Sure Connect hitch, installing the GR2704A drive kit, driveline and hydraulic component installation, operation and maintenance, the K.R.A. system override procedure, and a full parts list.With it you can attach the hitch to the subframe, install the driveline and the front and rear driveshaft guards, route and connect the hydraulic hoses and quick couplers on GR2020 and GR2120 tractors, and check hitch bolt torque and pivot lubrication on schedule. Torque charts and hydraulic fitting part numbers are included.Delivered as an instant PDF download you can view on any device or print.
What's Inside This Kubota GR2700B, GR2704A Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | - | To the Purchaser |
| Safety Precautions | - | Before Operation, Notice, Operating the Implements, The Tractor, Maintenance |
| Assembly | - | Assembling the Fun/Sure Connect Hitch (Attaching the Hitch to the Subframe), Installing the Drive Kit – Gr2704A (Assembling: Uhmw Guides, Engagement Mechanism) |
| Operation - Maintenance | - | Operation (Up and Down Control), Maintenance, Storage |
| K.R.A. System Override Mode | - | For Lawn Tractors Equipped with K.R.A. System, Start the Engine, Set the Throttle to the "Fast" Position, Push the PTO Lever to the "Engaged" Position |
| Parts | - | Introduction, Hitch, Drive Kit - GR2704A, Hydraulic Components, Driveline - 77700-03438, Driveline - 77700-03433 |
| Available Equipment | - | Fun/Sure Connect Hitch, 48" Blade, 46" Snowblower, 47" Rotary Broom |
| Torque Specification Table | - | Bolt Head Identification, Inches Bolt Size, Metric Bolt Size |
| Assembly of GR2700B Kit | - | Hardware Bag, Bushing Ø1 1/8" X 3/8"lg, Dust Cap 1/4"NPT, Female Quick Coupler 1/4"NPT, Male Quick Coupler 1/4"NPT, 90° Elbow 1/4"NPT Rm, Hex. Bolt 1/4"NC X 3/4", Ptd |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| GR2704A, GR2020, GR2120 | ||
| Hydraulic hose 60 inch length | 60 inches | p. 29 |
| Hydraulic hose 75 inch length | 75 inches | p. 29 |
| Elbow 90° 1/4 inch NPT size | 1/4 inch NPT | p. 29 |
| Elbow 90° replacement part number | 70060-02449 | p. 29 |
| All Models | ||
| Recommended hydraulic oil type | type of oil recommended by Kubota in tractor's Operating manual | p. 20 |
| Hitch bolt torque check interval (initial) | 8 hours | p. 22 |
| Hitch bolt torque check interval (subsequent) | 80 hours | p. 22 |
| Pivot points lubrication interval | 40 hours | p. 22 |
| Torque Spec: 1/4"-20NC, Grade 2 | 5.6 lbs-ft | p. 33 |
| Torque Spec: 1/4"-20NC, Grade 8 | 12 lbs-ft | p. 33 |
| Torque Spec: 5/16"-18NC, Grade 5 | 17 lbs-ft | p. 33 |
| GR2704A | ||
| Driveline maximum RPM | 2600 r/min | p. 14 |
Kubota GR2700B, GR2704A Common Problems This Manual Covers
Hydraulic function indexes wrong after assembly
A lift or attachment that acts like it is in the wrong position often traces to a hydraulic shaft or lever assembled out of position or pinned incorrectly. The hydraulic component installation steps show the correct arrangement.
Manual Section: Installation Of The Hydraulic Components (Figures 10-10A) p. 16Hitch bolts work loose
Hitch hardware can loosen with use and vibration. The manual sets an initial bolt torque check at 8 hours and every 80 hours after that.
Manual Section: Operation - Maintenance p. 22Leaks at hydraulic couplers and fittings
Quick couplers, elbows, and dust caps at the hydraulic connections can weep or leak. The parts section lists the 1/4 inch NPT fittings and their replacement part numbers.
Manual Section: Parts p. 24Driveline vibration or over-speed on GR2704A
Running the driveline above its rated speed can cause vibration and wear. The manual gives a maximum of 2600 r/min for the GR2704A and the correct driveline installation procedure.
Manual Section: Driveline Installation (Fig. 5-6) p. 13Weak or erratic hydraulic performance
Low or contaminated hydraulic oil, air in the system, or a leaking hose can make the attachment respond weakly or erratically. The manual points to the oil type recommended in the tractor operating manual.
Manual Section: Tractor Preparation And Hose Installation (Figure 11) p. 17Fasteners over or under torqued
Guessing at torque during assembly leads to loose or stripped hardware. The Torque Specification Table gives values by bolt size and grade in both inch and metric.
Manual Section: Torque Specification Table p. 33Frequently Asked Questions
Which models does this manual cover?
It covers the Kubota GR2700B and GR2704A driveline connector kit and front implement setup, publication OM 0414QH-A, and references installation on GR2020 and GR2120 tractors. It fits units from serial 21303175 and up.
Does it include torque specifications?
Yes. The Torque Specification Table lists values by bolt size and grade, for example 17 lbs-ft for a 5/16 inch-18NC grade 5 bolt and 53 lbs-ft for an M10 x 1.5 class 10.9 bolt. p. 33
Are hydraulic hose part numbers listed?
Yes. The parts section lists the 60 inch hose as 70060-02472 and the 75 inch hose as 70060-02471, along with quick coupler and elbow fitting part numbers. p. 29
What hydraulic oil should be used?
The manual directs you to use the type of oil recommended by Kubota in the tractor operating manual for the hydraulic system. p. 20
Is this Kubota GR2700B manual a download or a disc?
Yes. It's a 36-page searchable PDF, available to download the moment checkout clears. Open it on a laptop, tablet, or phone and take it straight out to the machine.
Am I able to print pages from this manual?
Print as many copies as you like; there are no restrictions on the file. Plenty of mechanics just run off the one section they need and keep it at the bench.
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