Part of the John Deere Repair Manuals.
By this afternoon you could have the John Deere 27C ZTS, 35C ZTS technical manual PDF (TM2052) open beside the machine, running the operational checkout that fills the front of its 322 pages. Electrical coverage takes up a large block of the book, with system diagrams and sub-system diagnostics that let you follow a circuit from the key switch to the component that quit. Hydraulic theory, diagnostics, and pressure tests fill over a third of the pages, from the pilot control circuit through the travel motors. Set engine oil pressure against the 448 to 515 kPa (65 to 75 psi) window, and call a machine mistracking if it drifts more than 200 mm over a 20 m test line. Chasing a mistrack without the numbers eats a whole day. Bookmarked and text-searchable, the download puts you an hour from having the machine back on the meter.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 5-21 | Foreword, Manual Scope, Safety Practices, Machine Guarding, Fluid Handling |
| Operational Checkout Procedure | 22-53 | Glow Plug Circuit Check, Monitor and Gauge Circuit Check, Pilot Control Shut-Off Switch Check, Propel Alarm Check, Cycle Times Check |
| Diagnostic Information | 54-81 | Diagnostic Approach, Fault Isolation, Reference Charts |
| System Information and Diagrams | 82-133 | System Descriptions, System Diagrams, Component Relationships |
| Sub-System Diagnostics and References | 134-181 | Sub-System Fault Isolation, Reference Tables |
| Theory of Operation | 182-249 | Cooling Fan and Water Pump, Hydraulic Theory, Electrical Theory |
| Diagnostics and Tests by Group | 250-322 | Group Diagnostics, Test Procedures, Measured Values |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Distance of Mistrack | less than 200 mm (7.87 in.) | p. 38 |
| Test Line (distance) | 20 m (66 ft.) | p. 38 |
| Delivery Valve Holder Torque | 39—44 N·m (29—33 lb-ft) | p. 68 |
| Engine Compression Pressure | 2910 kPa (29.1 bar) (422 psi) | p. 74 |
| Engine Oil Pressure | 448—515 kPa (4.48—5.15 bar) (65—75 psi) | p. 75 |
| Nut-to-Pilot Pressure Regulating Valve Housing Torque | 25 N·m (18 lb-ft) | p. 280 |
| Nut-to-Pilot Pressure Regulating Valve Housing Torque (27C ZTS) | 25 N·m (18 lb-ft) | p. 280 |
| Nut-to-Pilot Pressure Regulating Valve Housing Torque (35C ZTS) | 25 N·m (18 lb-ft) | p. 281 |
| Hydraulic Pump 1 and 2 Flow Rate (27C ZTS) at 13 790 kPa (2000 psi) | 27 L/min (7.3 gpm) | p. 295 |
| Hydraulic Pump 1 and 2 Flow Rate (27C ZTS) at 20 680 kPa (3000 psi) | 26 L/min (6.9 gpm) | p. 295 |
| Slow Idle Speed | 1200-1300 rpm | p. 65 |
| Fast Idle Speed | 2475-2575 rpm | p. 65 |
