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newSchoolWorks.com › VoTechWorks › Building & Construction › Heavy Equipment Operation › Loader Operation › Lesson 5
BLD-HEAV08-03 · Lesson 5 · 8 clock hours · practice

Slope Operation, Machine Care on the Job, and Competency Review

Objective. Students will safely operate a loader on a graded slope of at least 10%, perform a proper end-of-shift service check including fluid top-off if needed, and demonstrate integrated loader operation competency across all prior lesson skills in a scored capstone run.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed professional engineer or master tradesperson or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Slope Operation with a Wheel Loader

Operating a loader on a graded slope is one of the highest-risk tasks in earthmoving work. Grades of 10% or steeper demand strict habits because gravity, momentum, and an elevated bucket can combine to cause a rollover or a runaway machine in seconds.

Travel Direction Rules on Grade

The single most important rule on any slope is always face uphill when the bucket is loaded. A loaded bucket raises the machine's center of gravity forward. Traveling downhill while loaded shifts weight toward the front axle and over the edge of stability — do not do it.

Bucket Position on the Slope

Carry position on flat ground is the same carry position on a slope — low and level. A bucket raised above carry height on a slope is a critical safety violation in this program and will result in an automatic stop and lesson repeat. Keep the bucket low regardless of the urge to tilt it back for extra retention; proper bucket angle and travel speed handle spillage.

Turning and Maneuvering Near the Slope Edge

Maintain a safe buffer from the slope edge and any berm. If the site has a safety berm at the crest or toe of the slope, treat it as a hard boundary. Spot your path before you travel it. If visibility is blocked, stop and get out to look — never guess.

End-of-Shift Service Check

A loader that leaves the job with an unknown fluid level or a dry grease point can fail during the next operator's shift or suffer expensive damage overnight. The end-of-shift service walk is a professional obligation, not optional.

What to Check

Using the OEM (original equipment manufacturer) daily maintenance checklist for your specific machine:

1. Engine oil: Check the dipstick with the engine off and the machine parked on level ground. Add the OEM-specified oil grade only if the level is below the "add" mark. Never overfill.

2. Hydraulic fluid: Check the sight gauge or dipstick per OEM instructions. Hydraulic systems are sensitive to contamination — use only the specified fluid and a clean funnel.

3. Coolant level (cold check): Check the overflow reservoir only when the engine is cold. Never remove a pressurized radiator cap on a hot engine.

4. Tire pressure: Check each tire with a calibrated gauge and inflate to the OEM specification on the placard or operator's manual. Under-inflated tires increase rollover risk on slopes; over-inflated tires reduce traction.

5. Grease points: Apply grease to all fittings on the lube chart — bucket pins, lift arm pins, tilt cylinder pins, and steering joints. Wipe each fitting clean before and after. Count the pumps per fitting as noted on the OEM chart.

Shift-End Log Entry

Record every check in writing: date, machine ID or serial number, hours on the meter, fluid levels found and any fluid added (type and quantity), grease points serviced, and any defects noted. A defect must be reported to a supervisor immediately — tag the machine out of service if the defect affects safe operation (lockout/tagout principles apply). Your log is a legal and professional document; write it legibly in ink.

Integrated Competency Expectations

The capstone run brings together every skill from this course:

Safety behaviors carry 40% of the rubric score because they are non-negotiable on any job site. A single critical safety violation — operating without a seatbelt, raising the bucket above carry height on the slope, or entering a rollover hazard zone — stops the run immediately. You will repeat the lesson before any further assessment.

Target an 80% overall score. That threshold is set to match minimum employer expectations for an entry-level operator cleared to work unsupervised on a basic production task.

PPE and Field Safety

Wear your hard hat, high-visibility vest, safety glasses, and steel-toed boots for every moment you are in the work zone. The first-aid kit is staged at the field station — know where it is before the drill starts. No one enters the machine's swing or travel path while it is in motion. Establish clear hand signals with your instructor before the slope drill begins.

Key terms10

Carry positionThe bucket travel height — approximately 12 to 18 inches off the ground — used whenever the loader is moving to keep the center of gravity low and maintain stability.
Grade (percent)The steepness of a slope expressed as vertical rise divided by horizontal run, multiplied by 100. A 10% grade rises 10 feet for every 100 feet of horizontal distance.
Engine brakingThe slowing force provided by keeping the transmission engaged while descending a slope, so the drivetrain resists the machine rolling faster than the engine speed allows.
OEM (Original Equipment Manufacturer)The company that built the machine. OEM specifications in the operator's manual govern fluid types, capacities, greasing intervals, and tire pressures for that specific model.
Cold checkInspecting a fluid level only after the engine has been off long enough for temperatures to normalize, required for coolant to avoid burns from pressurized hot fluid.
Shift-end logA written record completed at the end of every work shift noting machine hours, fluid levels, fluids added, grease points serviced, and any defects — a professional and sometimes legal document.
Lockout/tagout (LOTO)A safety procedure that isolates a machine's energy sources and applies a physical lock and tag before maintenance or when a defect makes the machine unsafe to operate, preventing accidental startup.
Rollover hazard zoneAny area or condition — such as a slope edge, soft berm, or excessive speed on a turn — where the machine's center of gravity can exceed its stability triangle and cause a tip-over.
Payload targetingLoading a haul truck or target zone to a specified weight or volume within an acceptable tolerance, a key productivity skill measured during truck-loading cycles.
Grease point (zerk fitting)A small nipple fitting on a pin joint or pivot that accepts a grease gun tip; applying grease here lubricates the bearing surface and prevents premature wear.

Worked examples4

1. The slope on the school's graded pad is measured as 8 feet of vertical rise over 60 feet of horizontal run. Does it meet the minimum 10% grade requirement for this lesson's slope drill?
  1. Write the grade formula: Grade (%) = (Vertical Rise ÷ Horizontal Run) × 100
  2. Substitute the measured values: Grade (%) = (8 ÷ 60) × 100
  3. Divide: 8 ÷ 60 = 0.1333…
  4. Multiply by 100: 0.1333 × 100 = 13.3%
  5. Compare to the 10% minimum: 13.3% is greater than 10%.
Answer: Yes. The slope is approximately 13.3%, which exceeds the 10% minimum and is acceptable for the slope drill.
2. During the end-of-shift hydraulic fluid check you find the sight gauge shows the fluid level is 1.2 quarts below the full mark. The OEM specifies ISO 46 hydraulic fluid. You have two containers available: one labeled ISO 46 and one labeled ISO 68. How much fluid do you add, and which container do you use?
  1. Identify the required fluid type from the OEM specification: ISO 46 hydraulic fluid.
  2. Select the correct container: use the ISO 46 container. ISO 68 is a different viscosity grade and must not be mixed unless the OEM specifically permits it.
  3. Determine the quantity to add: the sight gauge shows a 1.2-quart deficit, so add 1.2 quarts.
  4. Use a clean funnel to avoid contamination and pour slowly, then recheck the sight gauge to confirm the level is at the full mark without overfilling.
Answer: Add 1.2 quarts of ISO 46 hydraulic fluid using the correctly labeled container and a clean funnel, then verify the sight gauge reads full.
3. A student's integrated competency rubric has 50 total points. Safety behaviors are weighted at 40% of the rubric. How many points are allocated to safety behaviors, and how many total points must the student earn to achieve the 80% passing score?
  1. Calculate safety behavior points: 40% × 50 = 0.40 × 50 = 20 points allocated to safety behaviors.
  2. Calculate remaining points for other skill areas: 50 − 20 = 30 points.
  3. Calculate the minimum passing score: 80% × 50 = 0.80 × 50 = 40 points required to pass.
  4. Confirm: the student must score at least 40 out of 50 points, with safety behaviors representing 20 of those possible points.
Answer: 20 points are allocated to safety behaviors. The student must earn at least 40 out of 50 total points to pass at the 80% threshold.
4. A tire placard specifies 65 psi cold inflation pressure. Your gauge reads 58 psi on the right-front tire. How many psi must you add, and why must you check pressure when the tire is cold?
  1. Calculate the pressure deficit: 65 psi (specified) − 58 psi (measured) = 7 psi to add.
  2. Inflate the tire by 7 psi and recheck with the gauge to confirm it reaches 65 psi.
  3. Explain the cold-check requirement: tire air pressure rises as the tire warms up from operation because heat causes air to expand. Checking a hot tire gives a falsely high reading; OEM placard pressures are stated for cold tires, so always check before the machine moves or after it has sat long enough to cool.
Answer: Add 7 psi to reach the specified 65 psi. Pressure must be checked cold because heat from operation raises air pressure, making a hot-tire reading inaccurate compared to the OEM specification.

The math in this lesson1

Learners compute percent grade from 8 feet of rise over 60 feet and 40% of a 50-point rubric.
7.RP.3
Brush up in the math halls at newSchoolWorks.com:
In class: Slope travel and loading drill on the school's graded pad or an earthen ramp: instructor demonstrates travel direction (always face uphill when loaded, travel straight up and down, no sharp turns on grade), then each student completes six uphill-loaded and six downhill-empty passes; common errors such as bucket too high on slope, turning on grade, and coasting with transmission in neutral are identified and corrected in real time. · End-of-shift service walk using the OEM daily maintenance checklist: students check engine oil, hydraulic fluid, coolant level (cold check), tire pressure or track tension, and grease points; each student completes a written shift-end log entry acceptable for a real job-site daily record. · Integrated competency run: each student completes a scored 10-cycle production sequence that combines pre-op inspection, startup, travel on the flat course, three slope passes, five truck-loading cycles to a stated payload, and shutdown; instructor scores using the program's loader competency rubric covering safety, technique, productivity, and documentation.
Materials: Wheel loader; graded slope or earthen ramp (minimum 10% grade); grease gun and basic fluid supplies; OEM daily maintenance checklist; loader competency rubric (program form); haul truck or target zone; PPE as above; first-aid kit at field station
Check: Student scores 80% or higher on the integrated competency rubric (safety behaviors weighted at 40% of rubric; a single critical safety violation—entering a rollover zone, no seatbelt, bucket raised above carry on slope—results in automatic stop and lesson repeat); shift-end log must be complete and legible to pass.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

Safe equipment operation — NCCER Heavy Equipment
1. When a wheel loader is carrying a loaded bucket on a 12% downhill slope, what is the correct travel direction?
Safe equipment operation — NCCER Heavy Equipment
2. Which of the following actions is a critical safety violation during the slope drill that results in an automatic stop and lesson repeat?
Safe equipment operation — NCCER Heavy Equipment
3. Why must the operator never coast downhill with the transmission in neutral?
Hazard recognition and PPE — OSHA 10
4. During an end-of-shift coolant check, you find the engine is still hot from operation. What is the correct action?
Hazard recognition and PPE — OSHA 10
5. An operator discovers that the loader's brake pedal has excessive travel and feels soft at the start of the integrated competency run. What is the correct next step?
Documentation and professionalism — NCCER Heavy Equipment
6. A student's shift-end log entry is complete but written in pencil and several words are difficult to read. Will this entry pass the lesson's documentation requirement?
Equipment maintenance — NCCER Heavy Equipment
7. During pre-shift tire inspection you measure 52 psi in a tire whose placard specifies 65 psi cold. The tire feels firm to the hand. What should you do?
Safe equipment operation — NCCER Heavy Equipment / OSHA 10
8. In the integrated competency rubric, safety behaviors are weighted at 40% of the total score. A student earns full marks on all non-safety categories but commits a critical safety violation. What is the outcome?
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